Finding the Fourth Proportional to 8,892.40, 12,272.16 and 5,357.56

Step by Step Solution

1. Step 1: Write the proportion equation
   8,892.40 : 12,272.16 = 5,357.56 : x
2. Step 2: Convert to fraction form
   8,892.40/12,272.16 = 5,357.56/x
3. Step 3: Cross multiply
   8,892.40x = 12,272.16 × 5,357.56
4. Step 4: Simplify right side
   8,892.40x = 65,748,833.53
5. Step 5: Solve for x
   x = 65,748,833.53/8,892.40
6. Step 6: Final answer
   x = 7,393.82