Finding the Fourth Proportional to 11,113,468.25, 16,670,108.72 and 8,686,662.78

Step by Step Solution

1. Step 1: Write the proportion equation
   11,113,468.25 : 16,670,108.72 = 8,686,662.78 : x
2. Step 2: Convert to fraction form
   11,113,468.25/16,670,108.72 = 8,686,662.78/x
3. Step 3: Cross multiply
   11,113,468.25x = 16,670,108.72 × 8,686,662.78
4. Step 4: Simplify right side
   11,113,468.25x = 144,807,613,040,807
5. Step 5: Solve for x
   x = 144,807,613,040,807/11,113,468.25
6. Step 6: Final answer
   x = 13,029,920.98