Finding the Fourth Proportional to 8,973.78, 12,382.74 and 4,994.28

Step by Step Solution

1. Step 1: Write the proportion equation
   8,973.78 : 12,382.74 = 4,994.28 : x
2. Step 2: Convert to fraction form
   8,973.78/12,382.74 = 4,994.28/x
3. Step 3: Cross multiply
   8,973.78x = 12,382.74 × 4,994.28
4. Step 4: Simplify right side
   8,973.78x = 61,842,870.73
5. Step 5: Solve for x
   x = 61,842,870.73/8,973.78
6. Step 6: Final answer
   x = 6,891.51