Finding the Fourth Proportional to 12,286,767.28, 16,959,111.32 and 7,131,789.60

Step by Step Solution

1. Step 1: Write the proportion equation
   12,286,767.28 : 16,959,111.32 = 7,131,789.60 : x
2. Step 2: Convert to fraction form
   12,286,767.28/16,959,111.32 = 7,131,789.60/x
3. Step 3: Cross multiply
   12,286,767.28x = 16,959,111.32 × 7,131,789.60
4. Step 4: Simplify right side
   12,286,767.28x = 120,948,813,737,218.27
5. Step 5: Solve for x
   x = 120,948,813,737,218.27/12,286,767.28
6. Step 6: Final answer
   x = 9,843,827.18