Finding the Fourth Proportional to 23,790.89, 32,778.56 and 15,710.15

Step by Step Solution

1. Step 1: Write the proportion equation
   23,790.89 : 32,778.56 = 15,710.15 : x
2. Step 2: Convert to fraction form
   23,790.89/32,778.56 = 15,710.15/x
3. Step 3: Cross multiply
   23,790.89x = 32,778.56 × 15,710.15
4. Step 4: Simplify right side
   23,790.89x = 514,956,215.61
5. Step 5: Solve for x
   x = 514,956,215.61/23,790.89
6. Step 6: Final answer
   x = 21,645.10