Finding the Fourth Proportional to 31,072.86, 46,591.29 and 21,224.04

Step by Step Solution

1. Step 1: Write the proportion equation
   31,072.86 : 46,591.29 = 21,224.04 : x
2. Step 2: Convert to fraction form
   31,072.86/46,591.29 = 21,224.04/x
3. Step 3: Cross multiply
   31,072.86x = 46,591.29 × 21,224.04
4. Step 4: Simplify right side
   31,072.86x = 988,855,402.61
5. Step 5: Solve for x
   x = 988,855,402.61/31,072.86
6. Step 6: Final answer
   x = 31,823.77