Finding the Fourth Proportional to 23,498.64, 32,428.17 and 12,888.36

Step by Step Solution

1. Step 1: Write the proportion equation
   23,498.64 : 32,428.17 = 12,888.36 : x
2. Step 2: Convert to fraction form
   23,498.64/32,428.17 = 12,888.36/x
3. Step 3: Cross multiply
   23,498.64x = 32,428.17 × 12,888.36
4. Step 4: Simplify right side
   23,498.64x = 417,945,929.10
5. Step 5: Solve for x
   x = 417,945,929.10/23,498.64
6. Step 6: Final answer
   x = 17,785.96