Finding the Fourth Proportional to 13,029.18, 19,532.76 and 8,857.47

Step by Step Solution

1. Step 1: Write the proportion equation
   13,029.18 : 19,532.76 = 8,857.47 : x
2. Step 2: Convert to fraction form
   13,029.18/19,532.76 = 8,857.47/x
3. Step 3: Cross multiply
   13,029.18x = 19,532.76 × 8,857.47
4. Step 4: Simplify right side
   13,029.18x = 173,010,835.72
5. Step 5: Solve for x
   x = 173,010,835.72/13,029.18
6. Step 6: Final answer
   x = 13,278.72