Finding the Fourth Proportional to 31,449.47, 47,174.69 and 8,075.39

Step by Step Solution

1. Step 1: Write the proportion equation
   31,449.47 : 47,174.69 = 8,075.39 : x
2. Step 2: Convert to fraction form
   31,449.47/47,174.69 = 8,075.39/x
3. Step 3: Cross multiply
   31,449.47x = 47,174.69 × 8,075.39
4. Step 4: Simplify right side
   31,449.47x = 380,953,979.50
5. Step 5: Solve for x
   x = 380,953,979.50/31,449.47
6. Step 6: Final answer
   x = 12,113.21