Finding the Fourth Proportional to 23,539.32, 32,484.24 and 12,928.86

Step by Step Solution

1. Step 1: Write the proportion equation
   23,539.32 : 32,484.24 = 12,928.86 : x
2. Step 2: Convert to fraction form
   23,539.32/32,484.24 = 12,928.86/x
3. Step 3: Cross multiply
   23,539.32x = 32,484.24 × 12,928.86
4. Step 4: Simplify right side
   23,539.32x = 419,984,191.17
5. Step 5: Solve for x
   x = 419,984,191.17/23,539.32
6. Step 6: Final answer
   x = 17,841.81