Finding the Fourth Proportional to 12,488.76, 17,234.50 and 6,899.76

Step by Step Solution

1. Step 1: Write the proportion equation
   12,488.76 : 17,234.50 = 6,899.76 : x
2. Step 2: Convert to fraction form
   12,488.76/17,234.50 = 6,899.76/x
3. Step 3: Cross multiply
   12,488.76x = 17,234.50 × 6,899.76
4. Step 4: Simplify right side
   12,488.76x = 118,913,913.72
5. Step 5: Solve for x
   x = 118,913,913.72/12,488.76
6. Step 6: Final answer
   x = 9,521.67