Finding the Fourth Proportional to 11,912.64, 16,439.88 and 7,196.02

Step by Step Solution

1. Step 1: Write the proportion equation
   11,912.64 : 16,439.88 = 7,196.02 : x
2. Step 2: Convert to fraction form
   11,912.64/16,439.88 = 7,196.02/x
3. Step 3: Cross multiply
   11,912.64x = 16,439.88 × 7,196.02
4. Step 4: Simplify right side
   11,912.64x = 118,301,705.28
5. Step 5: Solve for x
   x = 118,301,705.28/11,912.64
6. Step 6: Final answer
   x = 9,930.77