Finding the Fourth Proportional to 8,591.83, 12,875.58 and 3,656.50

Step by Step Solution

1. Step 1: Write the proportion equation
   8,591.83 : 12,875.58 = 3,656.50 : x
2. Step 2: Convert to fraction form
   8,591.83/12,875.58 = 3,656.50/x
3. Step 3: Cross multiply
   8,591.83x = 12,875.58 × 3,656.50
4. Step 4: Simplify right side
   8,591.83x = 47,079,493.89
5. Step 5: Solve for x
   x = 47,079,493.89/8,591.83
6. Step 6: Final answer
   x = 5,479.57