Finding the Fourth Proportional to 7,012.57, 10,522.88 and 2,851.81

Step by Step Solution

1. Step 1: Write the proportion equation
   7,012.57 : 10,522.88 = 2,851.81 : x
2. Step 2: Convert to fraction form
   7,012.57/10,522.88 = 2,851.81/x
3. Step 3: Cross multiply
   7,012.57x = 10,522.88 × 2,851.81
4. Step 4: Simplify right side
   7,012.57x = 30,009,254.41
5. Step 5: Solve for x
   x = 30,009,254.41/7,012.57
6. Step 6: Final answer
   x = 4,279.35