Finding the Fourth Proportional to 10,238.57, 14,131.16 and 6,411.99

Step by Step Solution

1. Step 1: Write the proportion equation
   10,238.57 : 14,131.16 = 6,411.99 : x
2. Step 2: Convert to fraction form
   10,238.57/14,131.16 = 6,411.99/x
3. Step 3: Cross multiply
   10,238.57x = 14,131.16 × 6,411.99
4. Step 4: Simplify right side
   10,238.57x = 90,608,856.61
5. Step 5: Solve for x
   x = 90,608,856.61/10,238.57
6. Step 6: Final answer
   x = 8,849.76