Finding the Fourth Proportional to 13,337.34, 18,407.91 and 7,960.16

Step by Step Solution

1. Step 1: Write the proportion equation
   13,337.34 : 18,407.91 = 7,960.16 : x
2. Step 2: Convert to fraction form
   13,337.34/18,407.91 = 7,960.16/x
3. Step 3: Cross multiply
   13,337.34x = 18,407.91 × 7,960.16
4. Step 4: Simplify right side
   13,337.34x = 146,529,816.83
5. Step 5: Solve for x
   x = 146,529,816.83/13,337.34
6. Step 6: Final answer
   x = 10,986.43