Finding the Fourth Proportional to 21,185,441.28, 29,238,886.98 and 12,367,784.52

Step by Step Solution

1. Step 1: Write the proportion equation
   21,185,441.28 : 29,238,886.98 = 12,367,784.52 : x
2. Step 2: Convert to fraction form
   21,185,441.28/29,238,886.98 = 12,367,784.52/x
3. Step 3: Cross multiply
   21,185,441.28x = 29,238,886.98 × 12,367,784.52
4. Step 4: Simplify right side
   21,185,441.28x = 361,620,253,773,273.56
5. Step 5: Solve for x
   x = 361,620,253,773,273.56/21,185,441.28
6. Step 6: Final answer
   x = 17,069,281.16