Finding the Fourth Proportional to 13,140,082.56, 18,131,522 and 7,338,124.56

Step by Step Solution

1. Step 1: Write the proportion equation
   13,140,082.56 : 18,131,522 = 7,338,124.56 : x
2. Step 2: Convert to fraction form
   13,140,082.56/18,131,522 = 7,338,124.56/x
3. Step 3: Cross multiply
   13,140,082.56x = 18,131,522 × 7,338,124.56
4. Step 4: Simplify right side
   13,140,082.56x = 133,051,366,898,380.31
5. Step 5: Solve for x
   x = 133,051,366,898,380.31/13,140,082.56
6. Step 6: Final answer
   x = 10,125,611.18