Finding the Fourth Proportional to 8,775.83, 12,101.45 and 5,787.86

Step by Step Solution

1. Step 1: Write the proportion equation
   8,775.83 : 12,101.45 = 5,787.86 : x
2. Step 2: Convert to fraction form
   8,775.83/12,101.45 = 5,787.86/x
3. Step 3: Cross multiply
   8,775.83x = 12,101.45 × 5,787.86
4. Step 4: Simplify right side
   8,775.83x = 70,041,408.95
5. Step 5: Solve for x
   x = 70,041,408.95/8,775.83
6. Step 6: Final answer
   x = 7,981.17