Finding the Fourth Proportional to 12,624.72, 17,422.20 and 7,036.08

Step by Step Solution

1. Step 1: Write the proportion equation
   12,624.72 : 17,422.20 = 7,036.08 : x
2. Step 2: Convert to fraction form
   12,624.72/17,422.20 = 7,036.08/x
3. Step 3: Cross multiply
   12,624.72x = 17,422.20 × 7,036.08
4. Step 4: Simplify right side
   12,624.72x = 122,583,992.98
5. Step 5: Solve for x
   x = 122,583,992.98/12,624.72
6. Step 6: Final answer
   x = 9,709.84