Finding the Fourth Proportional to 12,380.83, 17,085.60 and 6,715.64

Step by Step Solution

1. Step 1: Write the proportion equation
   12,380.83 : 17,085.60 = 6,715.64 : x
2. Step 2: Convert to fraction form
   12,380.83/17,085.60 = 6,715.64/x
3. Step 3: Cross multiply
   12,380.83x = 17,085.60 × 6,715.64
4. Step 4: Simplify right side
   12,380.83x = 114,740,781.50
5. Step 5: Solve for x
   x = 114,740,781.50/12,380.83
6. Step 6: Final answer
   x = 9,267.62