Finding the Fourth Proportional to 10,993, 15,164.40 and 7,007.80

Step by Step Solution

1. Step 1: Write the proportion equation
   10,993 : 15,164.40 = 7,007.80 : x
2. Step 2: Convert to fraction form
   10,993/15,164.40 = 7,007.80/x
3. Step 3: Cross multiply
   10,993x = 15,164.40 × 7,007.80
4. Step 4: Simplify right side
   10,993x = 106,269,082.32
5. Step 5: Solve for x
   x = 106,269,082.32/10,993
6. Step 6: Final answer
   x = 9,666.98