Finding the Fourth Proportional to 23,281.57, 32,128.86 and 12,671.20

Step by Step Solution

1. Step 1: Write the proportion equation
   23,281.57 : 32,128.86 = 12,671.20 : x
2. Step 2: Convert to fraction form
   23,281.57/32,128.86 = 12,671.20/x
3. Step 3: Cross multiply
   23,281.57x = 32,128.86 × 12,671.20
4. Step 4: Simplify right side
   23,281.57x = 407,111,210.83
5. Step 5: Solve for x
   x = 407,111,210.83/23,281.57
6. Step 6: Final answer
   x = 17,486.42