Finding the Fourth Proportional to 5,561.34, 7,675.39 and 3,139.19

Step by Step Solution

1. Step 1: Write the proportion equation
   5,561.34 : 7,675.39 = 3,139.19 : x
2. Step 2: Convert to fraction form
   5,561.34/7,675.39 = 3,139.19/x
3. Step 3: Cross multiply
   5,561.34x = 7,675.39 × 3,139.19
4. Step 4: Simplify right side
   5,561.34x = 24,094,507.53
5. Step 5: Solve for x
   x = 24,094,507.53/5,561.34
6. Step 6: Final answer
   x = 4,332.50