Finding the Fourth Proportional to 5,123.22, 7,070.27 and 2,886

Step by Step Solution

1. Step 1: Write the proportion equation
   5,123.22 : 7,070.27 = 2,886 : x
2. Step 2: Convert to fraction form
   5,123.22/7,070.27 = 2,886/x
3. Step 3: Cross multiply
   5,123.22x = 7,070.27 × 2,886
4. Step 4: Simplify right side
   5,123.22x = 20,404,784.79
5. Step 5: Solve for x
   x = 20,404,784.79/5,123.22
6. Step 6: Final answer
   x = 3,982.80