Finding the Fourth Proportional to 10,885.85, 15,013.55 and 7,301.40

Step by Step Solution

1. Step 1: Write the proportion equation
   10,885.85 : 15,013.55 = 7,301.40 : x
2. Step 2: Convert to fraction form
   10,885.85/15,013.55 = 7,301.40/x
3. Step 3: Cross multiply
   10,885.85x = 15,013.55 × 7,301.40
4. Step 4: Simplify right side
   10,885.85x = 109,619,933.97
5. Step 5: Solve for x
   x = 109,619,933.97/10,885.85
6. Step 6: Final answer
   x = 10,069.95