Finding the Fourth Proportional to 8,900.16, 12,282.45 and 4,921.32

Step by Step Solution

1. Step 1: Write the proportion equation
   8,900.16 : 12,282.45 = 4,921.32 : x
2. Step 2: Convert to fraction form
   8,900.16/12,282.45 = 4,921.32/x
3. Step 3: Cross multiply
   8,900.16x = 12,282.45 × 4,921.32
4. Step 4: Simplify right side
   8,900.16x = 60,445,866.83
5. Step 5: Solve for x
   x = 60,445,866.83/8,900.16
6. Step 6: Final answer
   x = 6,791.55