Finding the Fourth Proportional to 8,892.32, 12,271.37 and 5,355.72

Step by Step Solution

1. Step 1: Write the proportion equation
   8,892.32 : 12,271.37 = 5,355.72 : x
2. Step 2: Convert to fraction form
   8,892.32/12,271.37 = 5,355.72/x
3. Step 3: Cross multiply
   8,892.32x = 12,271.37 × 5,355.72
4. Step 4: Simplify right side
   8,892.32x = 65,721,994.96
5. Step 5: Solve for x
   x = 65,721,994.96/8,892.32
6. Step 6: Final answer
   x = 7,390.88