Finding the Fourth Proportional to 9,813.55, 13,543.05 and 5,622.61

Step by Step Solution

1. Step 1: Write the proportion equation
   9,813.55 : 13,543.05 = 5,622.61 : x
2. Step 2: Convert to fraction form
   9,813.55/13,543.05 = 5,622.61/x
3. Step 3: Cross multiply
   9,813.55x = 13,543.05 × 5,622.61
4. Step 4: Simplify right side
   9,813.55x = 76,147,254.50
5. Step 5: Solve for x
   x = 76,147,254.50/9,813.55
6. Step 6: Final answer
   x = 7,759.40