Finding the Fourth Proportional to 8,268.31, 12,389.50 and 7,030.63

Step by Step Solution

1. Step 1: Write the proportion equation
   8,268.31 : 12,389.50 = 7,030.63 : x
2. Step 2: Convert to fraction form
   8,268.31/12,389.50 = 7,030.63/x
3. Step 3: Cross multiply
   8,268.31x = 12,389.50 × 7,030.63
4. Step 4: Simplify right side
   8,268.31x = 87,105,990.39
5. Step 5: Solve for x
   x = 87,105,990.39/8,268.31
6. Step 6: Final answer
   x = 10,534.92