Finding the Fourth Proportional to 9,002.72, 13,492.56 and 7,958.72

Step by Step Solution

1. Step 1: Write the proportion equation
   9,002.72 : 13,492.56 = 7,958.72 : x
2. Step 2: Convert to fraction form
   9,002.72/13,492.56 = 7,958.72/x
3. Step 3: Cross multiply
   9,002.72x = 13,492.56 × 7,958.72
4. Step 4: Simplify right side
   9,002.72x = 107,383,507.12
5. Step 5: Solve for x
   x = 107,383,507.12/9,002.72
6. Step 6: Final answer
   x = 11,927.90