Finding the Fourth Proportional to 12,977.42, 17,909.00 and 7,672.22

Step by Step Solution

1. Step 1: Write the proportion equation
   12,977.42 : 17,909.00 = 7,672.22 : x
2. Step 2: Convert to fraction form
   12,977.42/17,909.00 = 7,672.22/x
3. Step 3: Cross multiply
   12,977.42x = 17,909.00 × 7,672.22
4. Step 4: Simplify right side
   12,977.42x = 137,401,756.00
5. Step 5: Solve for x
   x = 137,401,756.00/12,977.42
6. Step 6: Final answer
   x = 10,587.76