Finding the Fourth Proportional to 8,987.43, 12,402.09 and 5,007.82

Step by Step Solution

1. Step 1: Write the proportion equation
   8,987.43 : 12,402.09 = 5,007.82 : x
2. Step 2: Convert to fraction form
   8,987.43/12,402.09 = 5,007.82/x
3. Step 3: Cross multiply
   8,987.43x = 12,402.09 × 5,007.82
4. Step 4: Simplify right side
   8,987.43x = 62,107,434.34
5. Step 5: Solve for x
   x = 62,107,434.34/8,987.43
6. Step 6: Final answer
   x = 6,910.48