Finding the Fourth Proportional to 8,771.59, 12,106.65 and 5,787.82

Step by Step Solution

1. Step 1: Write the proportion equation
   8,771.59 : 12,106.65 = 5,787.82 : x
2. Step 2: Convert to fraction form
   8,771.59/12,106.65 = 5,787.82/x
3. Step 3: Cross multiply
   8,771.59x = 12,106.65 × 5,787.82
4. Step 4: Simplify right side
   8,771.59x = 70,071,111.00
5. Step 5: Solve for x
   x = 70,071,111.00/8,771.59
6. Step 6: Final answer
   x = 7,988.42