Finding the Fourth Proportional to 12,591.59, 18,884.45 and 5,567.78

Step by Step Solution

1. Step 1: Write the proportion equation
   12,591.59 : 18,884.45 = 5,567.78 : x
2. Step 2: Convert to fraction form
   12,591.59/18,884.45 = 5,567.78/x
3. Step 3: Cross multiply
   12,591.59x = 18,884.45 × 5,567.78
4. Step 4: Simplify right side
   12,591.59x = 105,144,340.76
5. Step 5: Solve for x
   x = 105,144,340.76/12,591.59
6. Step 6: Final answer
   x = 8,350.37