Finding the Fourth Proportional to 9,687.16, 13,368.72 and 5,708.44

Step by Step Solution

1. Step 1: Write the proportion equation
   9,687.16 : 13,368.72 = 5,708.44 : x
2. Step 2: Convert to fraction form
   9,687.16/13,368.72 = 5,708.44/x
3. Step 3: Cross multiply
   9,687.16x = 13,368.72 × 5,708.44
4. Step 4: Simplify right side
   9,687.16x = 76,314,536.00
5. Step 5: Solve for x
   x = 76,314,536.00/9,687.16
6. Step 6: Final answer
   x = 7,877.91