Finding the Fourth Proportional to 10,191.98, 15,289.49 and 3,617.61

Step by Step Solution

1. Step 1: Write the proportion equation
   10,191.98 : 15,289.49 = 3,617.61 : x
2. Step 2: Convert to fraction form
   10,191.98/15,289.49 = 3,617.61/x
3. Step 3: Cross multiply
   10,191.98x = 15,289.49 × 3,617.61
4. Step 4: Simplify right side
   10,191.98x = 55,311,393.83
5. Step 5: Solve for x
   x = 55,311,393.83/10,191.98
6. Step 6: Final answer
   x = 5,426.96