Finding the Fourth Proportional to 12,887,706.69, 17,785,673.82 and 7,994,505.60

Step by Step Solution

1. Step 1: Write the proportion equation
   12,887,706.69 : 17,785,673.82 = 7,994,505.60 : x
2. Step 2: Convert to fraction form
   12,887,706.69/17,785,673.82 = 7,994,505.60/x
3. Step 3: Cross multiply
   12,887,706.69x = 17,785,673.82 × 7,994,505.60
4. Step 4: Simplify right side
   12,887,706.69x = 142,187,668,953,763.38
5. Step 5: Solve for x
   x = 142,187,668,953,763.38/12,887,706.69
6. Step 6: Final answer
   x = 11,032,813.86