Finding the Fourth Proportional to 10,131.53, 13,981.11 and 5,655.17

Step by Step Solution

1. Step 1: Write the proportion equation
   10,131.53 : 13,981.11 = 5,655.17 : x
2. Step 2: Convert to fraction form
   10,131.53/13,981.11 = 5,655.17/x
3. Step 3: Cross multiply
   10,131.53x = 13,981.11 × 5,655.17
4. Step 4: Simplify right side
   10,131.53x = 79,065,488.94
5. Step 5: Solve for x
   x = 79,065,488.94/10,131.53
6. Step 6: Final answer
   x = 7,803.90