Finding the Fourth Proportional to 23,591.64, 32,555.52 and 12,980.10

Step by Step Solution

1. Step 1: Write the proportion equation
   23,591.64 : 32,555.52 = 12,980.10 : x
2. Step 2: Convert to fraction form
   23,591.64/32,555.52 = 12,980.10/x
3. Step 3: Cross multiply
   23,591.64x = 32,555.52 × 12,980.10
4. Step 4: Simplify right side
   23,591.64x = 422,573,905.15
5. Step 5: Solve for x
   x = 422,573,905.15/23,591.64
6. Step 6: Final answer
   x = 17,912.02