Finding the Fourth Proportional to 23,507.87, 32,440.89 and 12,897.55

Step by Step Solution

1. Step 1: Write the proportion equation
   23,507.87 : 32,440.89 = 12,897.55 : x
2. Step 2: Convert to fraction form
   23,507.87/32,440.89 = 12,897.55/x
3. Step 3: Cross multiply
   23,507.87x = 32,440.89 × 12,897.55
4. Step 4: Simplify right side
   23,507.87x = 418,407,968.08
5. Step 5: Solve for x
   x = 418,407,968.08/23,507.87
6. Step 6: Final answer
   x = 17,798.63