Finding the Fourth Proportional to 21,174, 31,760.94 and 5,591.52

Step by Step Solution

1. Step 1: Write the proportion equation
   21,174 : 31,760.94 = 5,591.52 : x
2. Step 2: Convert to fraction form
   21,174/31,760.94 = 5,591.52/x
3. Step 3: Cross multiply
   21,174x = 31,760.94 × 5,591.52
4. Step 4: Simplify right side
   21,174x = 177,591,931.23
5. Step 5: Solve for x
   x = 177,591,931.23/21,174
6. Step 6: Final answer
   x = 8,387.26