Finding the Fourth Proportional to 7,875.50, 10,867.86 and 4,338.50

Step by Step Solution

1. Step 1: Write the proportion equation
   7,875.50 : 10,867.86 = 4,338.50 : x
2. Step 2: Convert to fraction form
   7,875.50/10,867.86 = 4,338.50/x
3. Step 3: Cross multiply
   7,875.50x = 10,867.86 × 4,338.50
4. Step 4: Simplify right side
   7,875.50x = 47,150,156.27
5. Step 5: Solve for x
   x = 47,150,156.27/7,875.50
6. Step 6: Final answer
   x = 5,986.95