Finding the Fourth Proportional to 7,335.50, 10,122.91 and 3,978.32

Step by Step Solution

1. Step 1: Write the proportion equation
   7,335.50 : 10,122.91 = 3,978.32 : x
2. Step 2: Convert to fraction form
   7,335.50/10,122.91 = 3,978.32/x
3. Step 3: Cross multiply
   7,335.50x = 10,122.91 × 3,978.32
4. Step 4: Simplify right side
   7,335.50x = 40,272,114.75
5. Step 5: Solve for x
   x = 40,272,114.75/7,335.50
6. Step 6: Final answer
   x = 5,490.03