Finding the Fourth Proportional to 6,308.88, 8,706.12 and 3,656.40

Step by Step Solution

1. Step 1: Write the proportion equation
   6,308.88 : 8,706.12 = 3,656.40 : x
2. Step 2: Convert to fraction form
   6,308.88/8,706.12 = 3,656.40/x
3. Step 3: Cross multiply
   6,308.88x = 8,706.12 × 3,656.40
4. Step 4: Simplify right side
   6,308.88x = 31,833,057.17
5. Step 5: Solve for x
   x = 31,833,057.17/6,308.88
6. Step 6: Final answer
   x = 5,045.75