Finding the Fourth Proportional to 9,783.56, 13,502.22 and 5,591

Step by Step Solution

1. Step 1: Write the proportion equation
   9,783.56 : 13,502.22 = 5,591 : x
2. Step 2: Convert to fraction form
   9,783.56/13,502.22 = 5,591/x
3. Step 3: Cross multiply
   9,783.56x = 13,502.22 × 5,591
4. Step 4: Simplify right side
   9,783.56x = 75,490,912.02
5. Step 5: Solve for x
   x = 75,490,912.02/9,783.56
6. Step 6: Final answer
   x = 7,716.10