Finding the Fourth Proportional to 10,787.39, 14,886.60 and 6,071.78

Step by Step Solution

1. Step 1: Write the proportion equation
   10,787.39 : 14,886.60 = 6,071.78 : x
2. Step 2: Convert to fraction form
   10,787.39/14,886.60 = 6,071.78/x
3. Step 3: Cross multiply
   10,787.39x = 14,886.60 × 6,071.78
4. Step 4: Simplify right side
   10,787.39x = 90,388,085.72
5. Step 5: Solve for x
   x = 90,388,085.72/10,787.39
6. Step 6: Final answer
   x = 8,379.05