Finding the Fourth Proportional to 5,280.32, 7,903.30 and 3,893.10

Step by Step Solution

1. Step 1: Write the proportion equation
   5,280.32 : 7,903.30 = 3,893.10 : x
2. Step 2: Convert to fraction form
   5,280.32/7,903.30 = 3,893.10/x
3. Step 3: Cross multiply
   5,280.32x = 7,903.30 × 3,893.10
4. Step 4: Simplify right side
   5,280.32x = 30,768,337.23
5. Step 5: Solve for x
   x = 30,768,337.23/5,280.32
6. Step 6: Final answer
   x = 5,826.98