Finding the Fourth Proportional to 9,697.59, 13,381.38 and 5,718.06

Step by Step Solution

1. Step 1: Write the proportion equation
   9,697.59 : 13,381.38 = 5,718.06 : x
2. Step 2: Convert to fraction form
   9,697.59/13,381.38 = 5,718.06/x
3. Step 3: Cross multiply
   9,697.59x = 13,381.38 × 5,718.06
4. Step 4: Simplify right side
   9,697.59x = 76,515,533.72
5. Step 5: Solve for x
   x = 76,515,533.72/9,697.59
6. Step 6: Final answer
   x = 7,890.16