Finding the Fourth Proportional to 5,817.88, 8,030.51 and 3,928.15

Step by Step Solution

1. Step 1: Write the proportion equation
   5,817.88 : 8,030.51 = 3,928.15 : x
2. Step 2: Convert to fraction form
   5,817.88/8,030.51 = 3,928.15/x
3. Step 3: Cross multiply
   5,817.88x = 8,030.51 × 3,928.15
4. Step 4: Simplify right side
   5,817.88x = 31,545,047.86
5. Step 5: Solve for x
   x = 31,545,047.86/5,817.88
6. Step 6: Final answer
   x = 5,422.09