Finding the Fourth Proportional to 7,867.72, 10,860.86 and 5,625.70

Step by Step Solution

1. Step 1: Write the proportion equation
   7,867.72 : 10,860.86 = 5,625.70 : x
2. Step 2: Convert to fraction form
   7,867.72/10,860.86 = 5,625.70/x
3. Step 3: Cross multiply
   7,867.72x = 10,860.86 × 5,625.70
4. Step 4: Simplify right side
   7,867.72x = 61,099,940.10
5. Step 5: Solve for x
   x = 61,099,940.10/7,867.72
6. Step 6: Final answer
   x = 7,765.90