Finding the Fourth Proportional to 12,898.29, 17,799.85 and 7,234.30

Step by Step Solution

1. Step 1: Write the proportion equation
   12,898.29 : 17,799.85 = 7,234.30 : x
2. Step 2: Convert to fraction form
   12,898.29/17,799.85 = 7,234.30/x
3. Step 3: Cross multiply
   12,898.29x = 17,799.85 × 7,234.30
4. Step 4: Simplify right side
   12,898.29x = 128,769,454.86
5. Step 5: Solve for x
   x = 128,769,454.86/12,898.29
6. Step 6: Final answer
   x = 9,983.45