Finding the Fourth Proportional to 23,498.59, 32,428.47 and 12,888.13

Step by Step Solution

1. Step 1: Write the proportion equation
   23,498.59 : 32,428.47 = 12,888.13 : x
2. Step 2: Convert to fraction form
   23,498.59/32,428.47 = 12,888.13/x
3. Step 3: Cross multiply
   23,498.59x = 32,428.47 × 12,888.13
4. Step 4: Simplify right side
   23,498.59x = 417,942,337.06
5. Step 5: Solve for x
   x = 417,942,337.06/23,498.59
6. Step 6: Final answer
   x = 17,785.85