Finding the Fourth Proportional to 13,916.39, 20,877.98 and 4,055.76

Step by Step Solution

1. Step 1: Write the proportion equation
   13,916.39 : 20,877.98 = 4,055.76 : x
2. Step 2: Convert to fraction form
   13,916.39/20,877.98 = 4,055.76/x
3. Step 3: Cross multiply
   13,916.39x = 20,877.98 × 4,055.76
4. Step 4: Simplify right side
   13,916.39x = 84,676,055.89
5. Step 5: Solve for x
   x = 84,676,055.89/13,916.39
6. Step 6: Final answer
   x = 6,084.63