Finding the Fourth Proportional to 7,731.40, 10,671.90 and 5,499.75

Step by Step Solution

1. Step 1: Write the proportion equation
   7,731.40 : 10,671.90 = 5,499.75 : x
2. Step 2: Convert to fraction form
   7,731.40/10,671.90 = 5,499.75/x
3. Step 3: Cross multiply
   7,731.40x = 10,671.90 × 5,499.75
4. Step 4: Simplify right side
   7,731.40x = 58,692,772.33
5. Step 5: Solve for x
   x = 58,692,772.33/7,731.40
6. Step 6: Final answer
   x = 7,591.48