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Finding the Fourth Proportional to 21,840.84, 32,826.87 and 19,216.44

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Solution

The fourth proportional to 21,840.84, 32,826.87 and 19,216.44 is: 28,882.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,840.84 : 32,826.87 = 19,216.44 : x
  2. Step 2: Convert to fraction form
    21,840.84/32,826.87 = 19,216.44/x
  3. Step 3: Cross multiply
    21,840.84x = 32,826.87 × 19,216.44
  4. Step 4: Simplify right side
    21,840.84x = 630,815,577.74
  5. Step 5: Solve for x
    x = 630,815,577.74/21,840.84
  6. Step 6: Final answer
    x = 28,882.39

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