Finding the Fourth Proportional to 9,915.76, 13,684.16 and 5,667.52

Step by Step Solution

1. Step 1: Write the proportion equation
   9,915.76 : 13,684.16 = 5,667.52 : x
2. Step 2: Convert to fraction form
   9,915.76/13,684.16 = 5,667.52/x
3. Step 3: Cross multiply
   9,915.76x = 13,684.16 × 5,667.52
4. Step 4: Simplify right side
   9,915.76x = 77,555,250.48
5. Step 5: Solve for x
   x = 77,555,250.48/9,915.76
6. Step 6: Final answer
   x = 7,821.41