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Finding the Fourth Proportional to 12,966.86, 19,450.40 and 4,201.77

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Solution

The fourth proportional to 12,966.86, 19,450.40 and 4,201.77 is: 6,302.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,966.86 : 19,450.40 = 4,201.77 : x
  2. Step 2: Convert to fraction form
    12,966.86/19,450.40 = 4,201.77/x
  3. Step 3: Cross multiply
    12,966.86x = 19,450.40 × 4,201.77
  4. Step 4: Simplify right side
    12,966.86x = 81,726,194.59
  5. Step 5: Solve for x
    x = 81,726,194.59/12,966.86
  6. Step 6: Final answer
    x = 6,302.70

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