Finding the Fourth Proportional to 10,442.24, 14,412.10 and 7,920.13

Step by Step Solution

1. Step 1: Write the proportion equation
   10,442.24 : 14,412.10 = 7,920.13 : x
2. Step 2: Convert to fraction form
   10,442.24/14,412.10 = 7,920.13/x
3. Step 3: Cross multiply
   10,442.24x = 14,412.10 × 7,920.13
4. Step 4: Simplify right side
   10,442.24x = 114,145,713.89
5. Step 5: Solve for x
   x = 114,145,713.89/10,442.24
6. Step 6: Final answer
   x = 10,931.15