Finding the Fourth Proportional to 21,075.12, 31,614.52 and 5,492.72

Step by Step Solution

1. Step 1: Write the proportion equation
   21,075.12 : 31,614.52 = 5,492.72 : x
2. Step 2: Convert to fraction form
   21,075.12/31,614.52 = 5,492.72/x
3. Step 3: Cross multiply
   21,075.12x = 31,614.52 × 5,492.72
4. Step 4: Simplify right side
   21,075.12x = 173,649,706.29
5. Step 5: Solve for x
   x = 173,649,706.29/21,075.12
6. Step 6: Final answer
   x = 8,239.56