Finding the Fourth Proportional to 9,865.32, 13,614.54 and 5,673.57

Step by Step Solution

1. Step 1: Write the proportion equation
   9,865.32 : 13,614.54 = 5,673.57 : x
2. Step 2: Convert to fraction form
   9,865.32/13,614.54 = 5,673.57/x
3. Step 3: Cross multiply
   9,865.32x = 13,614.54 × 5,673.57
4. Step 4: Simplify right side
   9,865.32x = 77,243,045.71
5. Step 5: Solve for x
   x = 77,243,045.71/9,865.32
6. Step 6: Final answer
   x = 7,829.76