Finding the Fourth Proportional to 9,782.59, 14,638.82 and 8,470.87

Step by Step Solution

1. Step 1: Write the proportion equation
   9,782.59 : 14,638.82 = 8,470.87 : x
2. Step 2: Convert to fraction form
   9,782.59/14,638.82 = 8,470.87/x
3. Step 3: Cross multiply
   9,782.59x = 14,638.82 × 8,470.87
4. Step 4: Simplify right side
   9,782.59x = 124,003,541.17
5. Step 5: Solve for x
   x = 124,003,541.17/9,782.59
6. Step 6: Final answer
   x = 12,675.94