Finding the Fourth Proportional to 6,978.05, 10,448.43 and 5,870.88

Step by Step Solution

1. Step 1: Write the proportion equation
   6,978.05 : 10,448.43 = 5,870.88 : x
2. Step 2: Convert to fraction form
   6,978.05/10,448.43 = 5,870.88/x
3. Step 3: Cross multiply
   6,978.05x = 10,448.43 × 5,870.88
4. Step 4: Simplify right side
   6,978.05x = 61,341,426.48
5. Step 5: Solve for x
   x = 61,341,426.48/6,978.05
6. Step 6: Final answer
   x = 8,790.63