Finding the Fourth Proportional to 5,110.76, 7,052.82 and 2,987.72

Step by Step Solution

1. Step 1: Write the proportion equation
   5,110.76 : 7,052.82 = 2,987.72 : x
2. Step 2: Convert to fraction form
   5,110.76/7,052.82 = 2,987.72/x
3. Step 3: Cross multiply
   5,110.76x = 7,052.82 × 2,987.72
4. Step 4: Simplify right side
   5,110.76x = 21,071,851.37
5. Step 5: Solve for x
   x = 21,071,851.37/5,110.76
6. Step 6: Final answer
   x = 4,123.04