Finding the Fourth Proportional to 6,978.86, 9,622.95 and 5,087.10

Step by Step Solution

1. Step 1: Write the proportion equation
   6,978.86 : 9,622.95 = 5,087.10 : x
2. Step 2: Convert to fraction form
   6,978.86/9,622.95 = 5,087.10/x
3. Step 3: Cross multiply
   6,978.86x = 9,622.95 × 5,087.10
4. Step 4: Simplify right side
   6,978.86x = 48,952,954.57
5. Step 5: Solve for x
   x = 48,952,954.57/6,978.86
6. Step 6: Final answer
   x = 7,014.46