Finding the Fourth Proportional to 5,116.91, 7,060.94 and 2,878.34

Step by Step Solution

1. Step 1: Write the proportion equation
   5,116.91 : 7,060.94 = 2,878.34 : x
2. Step 2: Convert to fraction form
   5,116.91/7,060.94 = 2,878.34/x
3. Step 3: Cross multiply
   5,116.91x = 7,060.94 × 2,878.34
4. Step 4: Simplify right side
   5,116.91x = 20,323,810.89
5. Step 5: Solve for x
   x = 20,323,810.89/5,116.91
6. Step 6: Final answer
   x = 3,971.89