Finding the Fourth Proportional to 23,498.65, 32,428.64 and 12,888.26

Step by Step Solution

1. Step 1: Write the proportion equation
   23,498.65 : 32,428.64 = 12,888.26 : x
2. Step 2: Convert to fraction form
   23,498.65/32,428.64 = 12,888.26/x
3. Step 3: Cross multiply
   23,498.65x = 32,428.64 × 12,888.26
4. Step 4: Simplify right side
   23,498.65x = 417,948,517.18
5. Step 5: Solve for x
   x = 417,948,517.18/23,498.65
6. Step 6: Final answer
   x = 17,786.07