Finding the Fourth Proportional to 12,902.52, 17,788.98 and 8,357.18

Step by Step Solution

1. Step 1: Write the proportion equation
   12,902.52 : 17,788.98 = 8,357.18 : x
2. Step 2: Convert to fraction form
   12,902.52/17,788.98 = 8,357.18/x
3. Step 3: Cross multiply
   12,902.52x = 17,788.98 × 8,357.18
4. Step 4: Simplify right side
   12,902.52x = 148,665,618.93
5. Step 5: Solve for x
   x = 148,665,618.93/12,902.52
6. Step 6: Final answer
   x = 11,522.22