Finding the Fourth Proportional to 13,031.61, 17,983.18 and 7,723.27

Step by Step Solution

1. Step 1: Write the proportion equation
   13,031.61 : 17,983.18 = 7,723.27 : x
2. Step 2: Convert to fraction form
   13,031.61/17,983.18 = 7,723.27/x
3. Step 3: Cross multiply
   13,031.61x = 17,983.18 × 7,723.27
4. Step 4: Simplify right side
   13,031.61x = 138,888,915.98
5. Step 5: Solve for x
   x = 138,888,915.98/13,031.61
6. Step 6: Final answer
   x = 10,657.85