Finding the Fourth Proportional to 13,263.72, 18,304.04 and 7,213.98

Step by Step Solution

1. Step 1: Write the proportion equation
   13,263.72 : 18,304.04 = 7,213.98 : x
2. Step 2: Convert to fraction form
   13,263.72/18,304.04 = 7,213.98/x
3. Step 3: Cross multiply
   13,263.72x = 18,304.04 × 7,213.98
4. Step 4: Simplify right side
   13,263.72x = 132,044,978.48
5. Step 5: Solve for x
   x = 132,044,978.48/13,263.72
6. Step 6: Final answer
   x = 9,955.35