Finding the Fourth Proportional to 8,856.51, 12,221.83 and 4,877.99

Step by Step Solution

1. Step 1: Write the proportion equation
   8,856.51 : 12,221.83 = 4,877.99 : x
2. Step 2: Convert to fraction form
   8,856.51/12,221.83 = 4,877.99/x
3. Step 3: Cross multiply
   8,856.51x = 12,221.83 × 4,877.99
4. Step 4: Simplify right side
   8,856.51x = 59,617,921.77
5. Step 5: Solve for x
   x = 59,617,921.77/8,856.51
6. Step 6: Final answer
   x = 6,731.54