Finding the Fourth Proportional to 10,769.31, 14,851.28 and 6,991.07

Step by Step Solution

1. Step 1: Write the proportion equation
   10,769.31 : 14,851.28 = 6,991.07 : x
2. Step 2: Convert to fraction form
   10,769.31/14,851.28 = 6,991.07/x
3. Step 3: Cross multiply
   10,769.31x = 14,851.28 × 6,991.07
4. Step 4: Simplify right side
   10,769.31x = 103,826,281.29
5. Step 5: Solve for x
   x = 103,826,281.29/10,769.31
6. Step 6: Final answer
   x = 9,640.94