Finding the Fourth Proportional to 8,776.17, 12,111.90 and 4,998.51

Step by Step Solution

1. Step 1: Write the proportion equation
   8,776.17 : 12,111.90 = 4,998.51 : x
2. Step 2: Convert to fraction form
   8,776.17/12,111.90 = 4,998.51/x
3. Step 3: Cross multiply
   8,776.17x = 12,111.90 × 4,998.51
4. Step 4: Simplify right side
   8,776.17x = 60,541,453.27
5. Step 5: Solve for x
   x = 60,541,453.27/8,776.17
6. Step 6: Final answer
   x = 6,898.39