Finding the Fourth Proportional to 13,146.88, 19,701.52 and 9,243.20

Step by Step Solution

1. Step 1: Write the proportion equation
   13,146.88 : 19,701.52 = 9,243.20 : x
2. Step 2: Convert to fraction form
   13,146.88/19,701.52 = 9,243.20/x
3. Step 3: Cross multiply
   13,146.88x = 19,701.52 × 9,243.20
4. Step 4: Simplify right side
   13,146.88x = 182,105,089.66
5. Step 5: Solve for x
   x = 182,105,089.66/13,146.88
6. Step 6: Final answer
   x = 13,851.58