Finding the Fourth Proportional to 5,681.13, 7,840.76 and 5,432.05

Step by Step Solution

1. Step 1: Write the proportion equation
   5,681.13 : 7,840.76 = 5,432.05 : x
2. Step 2: Convert to fraction form
   5,681.13/7,840.76 = 5,432.05/x
3. Step 3: Cross multiply
   5,681.13x = 7,840.76 × 5,432.05
4. Step 4: Simplify right side
   5,681.13x = 42,591,400.36
5. Step 5: Solve for x
   x = 42,591,400.36/5,681.13
6. Step 6: Final answer
   x = 7,496.99