Finding the Fourth Proportional to 12,415.01, 17,136.72 and 7,950.78

Step by Step Solution

1. Step 1: Write the proportion equation
   12,415.01 : 17,136.72 = 7,950.78 : x
2. Step 2: Convert to fraction form
   12,415.01/17,136.72 = 7,950.78/x
3. Step 3: Cross multiply
   12,415.01x = 17,136.72 × 7,950.78
4. Step 4: Simplify right side
   12,415.01x = 136,250,290.64
5. Step 5: Solve for x
   x = 136,250,290.64/12,415.01
6. Step 6: Final answer
   x = 10,974.65