Finding the Fourth Proportional to 8,985.43, 12,399.86 and 5,006.51

Step by Step Solution

1. Step 1: Write the proportion equation
   8,985.43 : 12,399.86 = 5,006.51 : x
2. Step 2: Convert to fraction form
   8,985.43/12,399.86 = 5,006.51/x
3. Step 3: Cross multiply
   8,985.43x = 12,399.86 × 5,006.51
4. Step 4: Simplify right side
   8,985.43x = 62,079,973.61
5. Step 5: Solve for x
   x = 62,079,973.61/8,985.43
6. Step 6: Final answer
   x = 6,908.96