Finding the Fourth Proportional to 21,155.86, 31,730.69 and 5,573.46

Step by Step Solution

1. Step 1: Write the proportion equation
   21,155.86 : 31,730.69 = 5,573.46 : x
2. Step 2: Convert to fraction form
   21,155.86/31,730.69 = 5,573.46/x
3. Step 3: Cross multiply
   21,155.86x = 31,730.69 × 5,573.46
4. Step 4: Simplify right side
   21,155.86x = 176,849,731.49
5. Step 5: Solve for x
   x = 176,849,731.49/21,155.86
6. Step 6: Final answer
   x = 8,359.37