Finding the Fourth Proportional to 22,976, 31,706.88 and 13,040

Step by Step Solution

1. Step 1: Write the proportion equation
   22,976 : 31,706.88 = 13,040 : x
2. Step 2: Convert to fraction form
   22,976/31,706.88 = 13,040/x
3. Step 3: Cross multiply
   22,976x = 31,706.88 × 13,040
4. Step 4: Simplify right side
   22,976x = 413,457,715.20
5. Step 5: Solve for x
   x = 413,457,715.20/22,976
6. Step 6: Final answer
   x = 17,995.20