Finding the Fourth Proportional to 8,782.98, 12,120.52 and 5,005.98

Step by Step Solution

1. Step 1: Write the proportion equation
   8,782.98 : 12,120.52 = 5,005.98 : x
2. Step 2: Convert to fraction form
   8,782.98/12,120.52 = 5,005.98/x
3. Step 3: Cross multiply
   8,782.98x = 12,120.52 × 5,005.98
4. Step 4: Simplify right side
   8,782.98x = 60,675,080.71
5. Step 5: Solve for x
   x = 60,675,080.71/8,782.98
6. Step 6: Final answer
   x = 6,908.26