Finding the Fourth Proportional to 21,397.56, 32,098.74 and 5,815.32

Step by Step Solution

1. Step 1: Write the proportion equation
   21,397.56 : 32,098.74 = 5,815.32 : x
2. Step 2: Convert to fraction form
   21,397.56/32,098.74 = 5,815.32/x
3. Step 3: Cross multiply
   21,397.56x = 32,098.74 × 5,815.32
4. Step 4: Simplify right side
   21,397.56x = 186,664,444.70
5. Step 5: Solve for x
   x = 186,664,444.70/21,397.56
6. Step 6: Final answer
   x = 8,723.63