Finding the Fourth Proportional to 9,781.59, 14,637.32 and 8,469.87

Step by Step Solution

1. Step 1: Write the proportion equation
   9,781.59 : 14,637.32 = 8,469.87 : x
2. Step 2: Convert to fraction form
   9,781.59/14,637.32 = 8,469.87/x
3. Step 3: Cross multiply
   9,781.59x = 14,637.32 × 8,469.87
4. Step 4: Simplify right side
   9,781.59x = 123,976,197.55
5. Step 5: Solve for x
   x = 123,976,197.55/9,781.59
6. Step 6: Final answer
   x = 12,674.44