Finding the Fourth Proportional to 12,234.31, 16,889.61 and 7,521.32

Step by Step Solution

1. Step 1: Write the proportion equation
   12,234.31 : 16,889.61 = 7,521.32 : x
2. Step 2: Convert to fraction form
   12,234.31/16,889.61 = 7,521.32/x
3. Step 3: Cross multiply
   12,234.31x = 16,889.61 × 7,521.32
4. Step 4: Simplify right side
   12,234.31x = 127,032,231.91
5. Step 5: Solve for x
   x = 127,032,231.91/12,234.31
6. Step 6: Final answer
   x = 10,383.28