Finding the Fourth Proportional to 8,815.68, 12,158.56 and 7,493.76

Step by Step Solution

1. Step 1: Write the proportion equation
   8,815.68 : 12,158.56 = 7,493.76 : x
2. Step 2: Convert to fraction form
   8,815.68/12,158.56 = 7,493.76/x
3. Step 3: Cross multiply
   8,815.68x = 12,158.56 × 7,493.76
4. Step 4: Simplify right side
   8,815.68x = 91,113,330.59
5. Step 5: Solve for x
   x = 91,113,330.59/8,815.68
6. Step 6: Final answer
   x = 10,335.37