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Finding the Fourth Proportional to 28,555.80, 42,811.74 and 14,504.28

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Solution

The fourth proportional to 28,555.80, 42,811.74 and 14,504.28 is: 21,745.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,555.80 : 42,811.74 = 14,504.28 : x
  2. Step 2: Convert to fraction form
    28,555.80/42,811.74 = 14,504.28/x
  3. Step 3: Cross multiply
    28,555.80x = 42,811.74 × 14,504.28
  4. Step 4: Simplify right side
    28,555.80x = 620,953,464.25
  5. Step 5: Solve for x
    x = 620,953,464.25/28,555.80
  6. Step 6: Final answer
    x = 21,745.27

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