Finding the Fourth Proportional to 7,388.40, 10,196.76 and 7,158.96

Step by Step Solution

1. Step 1: Write the proportion equation
   7,388.40 : 10,196.76 = 7,158.96 : x
2. Step 2: Convert to fraction form
   7,388.40/10,196.76 = 7,158.96/x
3. Step 3: Cross multiply
   7,388.40x = 10,196.76 × 7,158.96
4. Step 4: Simplify right side
   7,388.40x = 72,998,196.97
5. Step 5: Solve for x
   x = 72,998,196.97/7,388.40
6. Step 6: Final answer
   x = 9,880.11