Finding the Fourth Proportional to 23,572.72, 32,530.54 and 12,817.60

Step by Step Solution

1. Step 1: Write the proportion equation
   23,572.72 : 32,530.54 = 12,817.60 : x
2. Step 2: Convert to fraction form
   23,572.72/32,530.54 = 12,817.60/x
3. Step 3: Cross multiply
   23,572.72x = 32,530.54 × 12,817.60
4. Step 4: Simplify right side
   23,572.72x = 416,963,449.50
5. Step 5: Solve for x
   x = 416,963,449.50/23,572.72
6. Step 6: Final answer
   x = 17,688.39