Finding the Fourth Proportional to 32,457.68, 48,665.52 and 12,738.20

Step by Step Solution

1. Step 1: Write the proportion equation
   32,457.68 : 48,665.52 = 12,738.20 : x
2. Step 2: Convert to fraction form
   32,457.68/48,665.52 = 12,738.20/x
3. Step 3: Cross multiply
   32,457.68x = 48,665.52 × 12,738.20
4. Step 4: Simplify right side
   32,457.68x = 619,911,126.86
5. Step 5: Solve for x
   x = 619,911,126.86/32,457.68
6. Step 6: Final answer
   x = 19,099.06