Finding the Fourth Proportional to 12,861.10, 17,744.70 and 7,553.98

Step by Step Solution

1. Step 1: Write the proportion equation
   12,861.10 : 17,744.70 = 7,553.98 : x
2. Step 2: Convert to fraction form
   12,861.10/17,744.70 = 7,553.98/x
3. Step 3: Cross multiply
   12,861.10x = 17,744.70 × 7,553.98
4. Step 4: Simplify right side
   12,861.10x = 134,043,108.91
5. Step 5: Solve for x
   x = 134,043,108.91/12,861.10
6. Step 6: Final answer
   x = 10,422.37