Finding the Fourth Proportional to 32,321.76, 48,489.60 and 19,158.72

Step by Step Solution

1. Step 1: Write the proportion equation
   32,321.76 : 48,489.60 = 19,158.72 : x
2. Step 2: Convert to fraction form
   32,321.76/48,489.60 = 19,158.72/x
3. Step 3: Cross multiply
   32,321.76x = 48,489.60 × 19,158.72
4. Step 4: Simplify right side
   32,321.76x = 928,998,669.31
5. Step 5: Solve for x
   x = 928,998,669.31/32,321.76
6. Step 6: Final answer
   x = 28,742.21