Finding the Fourth Proportional to 23,130.16, 31,919.58 and 13,060.72

Step by Step Solution

1. Step 1: Write the proportion equation
   23,130.16 : 31,919.58 = 13,060.72 : x
2. Step 2: Convert to fraction form
   23,130.16/31,919.58 = 13,060.72/x
3. Step 3: Cross multiply
   23,130.16x = 31,919.58 × 13,060.72
4. Step 4: Simplify right side
   23,130.16x = 416,892,696.90
5. Step 5: Solve for x
   x = 416,892,696.90/23,130.16
6. Step 6: Final answer
   x = 18,023.77