Finding the Fourth Proportional to 6,430.52, 8,870.16 and 3,910.88

Step by Step Solution

1. Step 1: Write the proportion equation
   6,430.52 : 8,870.16 = 3,910.88 : x
2. Step 2: Convert to fraction form
   6,430.52/8,870.16 = 3,910.88/x
3. Step 3: Cross multiply
   6,430.52x = 8,870.16 × 3,910.88
4. Step 4: Simplify right side
   6,430.52x = 34,690,131.34
5. Step 5: Solve for x
   x = 34,690,131.34/6,430.52
6. Step 6: Final answer
   x = 5,394.61