Finding the Fourth Proportional to 23,686.43, 35,501.94 and 13,151.40

Step by Step Solution

1. Step 1: Write the proportion equation
   23,686.43 : 35,501.94 = 13,151.40 : x
2. Step 2: Convert to fraction form
   23,686.43/35,501.94 = 13,151.40/x
3. Step 3: Cross multiply
   23,686.43x = 35,501.94 × 13,151.40
4. Step 4: Simplify right side
   23,686.43x = 466,900,213.72
5. Step 5: Solve for x
   x = 466,900,213.72/23,686.43
6. Step 6: Final answer
   x = 19,711.72