Finding the Fourth Proportional to 10,401.34, 15,607.42 and 7,951.90

Step by Step Solution

1. Step 1: Write the proportion equation
   10,401.34 : 15,607.42 = 7,951.90 : x
2. Step 2: Convert to fraction form
   10,401.34/15,607.42 = 7,951.90/x
3. Step 3: Cross multiply
   10,401.34x = 15,607.42 × 7,951.90
4. Step 4: Simplify right side
   10,401.34x = 124,108,643.10
5. Step 5: Solve for x
   x = 124,108,643.10/10,401.34
6. Step 6: Final answer
   x = 11,931.99