Finding the Fourth Proportional to 12,445.55, 17,167.49 and 7,967.67

Step by Step Solution

1. Step 1: Write the proportion equation
   12,445.55 : 17,167.49 = 7,967.67 : x
2. Step 2: Convert to fraction form
   12,445.55/17,167.49 = 7,967.67/x
3. Step 3: Cross multiply
   12,445.55x = 17,167.49 × 7,967.67
4. Step 4: Simplify right side
   12,445.55x = 136,784,865.53
5. Step 5: Solve for x
   x = 136,784,865.53/12,445.55
6. Step 6: Final answer
   x = 10,990.67