Finding the Fourth Proportional to 9,904.71, 13,668.98 and 5,714.31

Step by Step Solution

1. Step 1: Write the proportion equation
   9,904.71 : 13,668.98 = 5,714.31 : x
2. Step 2: Convert to fraction form
   9,904.71/13,668.98 = 5,714.31/x
3. Step 3: Cross multiply
   9,904.71x = 13,668.98 × 5,714.31
4. Step 4: Simplify right side
   9,904.71x = 78,108,760.53
5. Step 5: Solve for x
   x = 78,108,760.53/9,904.71
6. Step 6: Final answer
   x = 7,886.02