Finding the Fourth Proportional to 23,510.56, 32,442.72 and 12,900.16

Step by Step Solution

1. Step 1: Write the proportion equation
   23,510.56 : 32,442.72 = 12,900.16 : x
2. Step 2: Convert to fraction form
   23,510.56/32,442.72 = 12,900.16/x
3. Step 3: Cross multiply
   23,510.56x = 32,442.72 × 12,900.16
4. Step 4: Simplify right side
   23,510.56x = 418,516,278.84
5. Step 5: Solve for x
   x = 418,516,278.84/23,510.56
6. Step 6: Final answer
   x = 17,801.20