Finding the Fourth Proportional to 23,131.32, 31,913.42 and 15,061.32

Step by Step Solution

1. Step 1: Write the proportion equation
   23,131.32 : 31,913.42 = 15,061.32 : x
2. Step 2: Convert to fraction form
   23,131.32/31,913.42 = 15,061.32/x
3. Step 3: Cross multiply
   23,131.32x = 31,913.42 × 15,061.32
4. Step 4: Simplify right side
   23,131.32x = 480,658,230.91
5. Step 5: Solve for x
   x = 480,658,230.91/23,131.32
6. Step 6: Final answer
   x = 20,779.54