Finding the Fourth Proportional to 7,868.76, 10,810.29 and 7,040.43

Step by Step Solution

1. Step 1: Write the proportion equation
   7,868.76 : 10,810.29 = 7,040.43 : x
2. Step 2: Convert to fraction form
   7,868.76/10,810.29 = 7,040.43/x
3. Step 3: Cross multiply
   7,868.76x = 10,810.29 × 7,040.43
4. Step 4: Simplify right side
   7,868.76x = 76,109,090.02
5. Step 5: Solve for x
   x = 76,109,090.02/7,868.76
6. Step 6: Final answer
   x = 9,672.31