Finding the Fourth Proportional to 11,915.16, 16,443.22 and 7,196.68

Step by Step Solution

1. Step 1: Write the proportion equation
   11,915.16 : 16,443.22 = 7,196.68 : x
2. Step 2: Convert to fraction form
   11,915.16/16,443.22 = 7,196.68/x
3. Step 3: Cross multiply
   11,915.16x = 16,443.22 × 7,196.68
4. Step 4: Simplify right side
   11,915.16x = 118,336,592.51
5. Step 5: Solve for x
   x = 118,336,592.51/11,915.16
6. Step 6: Final answer
   x = 9,931.60