Finding the Fourth Proportional to 11,113,469.55, 16,670,110.71 and 8,686,664.10

Step by Step Solution

1. Step 1: Write the proportion equation
   11,113,469.55 : 16,670,110.71 = 8,686,664.10 : x
2. Step 2: Convert to fraction form
   11,113,469.55/16,670,110.71 = 8,686,664.10/x
3. Step 3: Cross multiply
   11,113,469.55x = 16,670,110.71 × 8,686,664.10
4. Step 4: Simplify right side
   11,113,469.55x = 144,807,652,247,582.50
5. Step 5: Solve for x
   x = 144,807,652,247,582.50/11,113,469.55
6. Step 6: Final answer
   x = 13,029,922.98