Finding the Fourth Proportional to 5,116.67, 7,060.71 and 2,878.45

Step by Step Solution

1. Step 1: Write the proportion equation
   5,116.67 : 7,060.71 = 2,878.45 : x
2. Step 2: Convert to fraction form
   5,116.67/7,060.71 = 2,878.45/x
3. Step 3: Cross multiply
   5,116.67x = 7,060.71 × 2,878.45
4. Step 4: Simplify right side
   5,116.67x = 20,323,883.53
5. Step 5: Solve for x
   x = 20,323,883.53/5,116.67
6. Step 6: Final answer
   x = 3,972.09