Finding the Fourth Proportional to 10,993.59, 15,160.28 and 7,215.53

Step by Step Solution

1. Step 1: Write the proportion equation
   10,993.59 : 15,160.28 = 7,215.53 : x
2. Step 2: Convert to fraction form
   10,993.59/15,160.28 = 7,215.53/x
3. Step 3: Cross multiply
   10,993.59x = 15,160.28 × 7,215.53
4. Step 4: Simplify right side
   10,993.59x = 109,389,343.27
5. Step 5: Solve for x
   x = 109,389,343.27/10,993.59
6. Step 6: Final answer
   x = 9,950.28