Finding the Fourth Proportional to 12,636.52, 17,438.48 and 7,047.52

Step by Step Solution

1. Step 1: Write the proportion equation
   12,636.52 : 17,438.48 = 7,047.52 : x
2. Step 2: Convert to fraction form
   12,636.52/17,438.48 = 7,047.52/x
3. Step 3: Cross multiply
   12,636.52x = 17,438.48 × 7,047.52
4. Step 4: Simplify right side
   12,636.52x = 122,898,036.57
5. Step 5: Solve for x
   x = 122,898,036.57/12,636.52
6. Step 6: Final answer
   x = 9,725.62