Finding the Fourth Proportional to 7,348.32, 10,140.62 and 3,991.10

Step by Step Solution

1. Step 1: Write the proportion equation
   7,348.32 : 10,140.62 = 3,991.10 : x
2. Step 2: Convert to fraction form
   7,348.32/10,140.62 = 3,991.10/x
3. Step 3: Cross multiply
   7,348.32x = 10,140.62 × 3,991.10
4. Step 4: Simplify right side
   7,348.32x = 40,472,157.82
5. Step 5: Solve for x
   x = 40,472,157.82/7,348.32
6. Step 6: Final answer
   x = 5,507.67