Finding the Fourth Proportional to 5,116.22, 7,060.34 and 2,878.12

Step by Step Solution

1. Step 1: Write the proportion equation
   5,116.22 : 7,060.34 = 2,878.12 : x
2. Step 2: Convert to fraction form
   5,116.22/7,060.34 = 2,878.12/x
3. Step 3: Cross multiply
   5,116.22x = 7,060.34 × 2,878.12
4. Step 4: Simplify right side
   5,116.22x = 20,320,505.76
5. Step 5: Solve for x
   x = 20,320,505.76/5,116.22
6. Step 6: Final answer
   x = 3,971.78