Finding the Fourth Proportional to 31,152.54, 42,990.28 and 17,005.38

Step by Step Solution

1. Step 1: Write the proportion equation
   31,152.54 : 42,990.28 = 17,005.38 : x
2. Step 2: Convert to fraction form
   31,152.54/42,990.28 = 17,005.38/x
3. Step 3: Cross multiply
   31,152.54x = 42,990.28 × 17,005.38
4. Step 4: Simplify right side
   31,152.54x = 731,066,047.71
5. Step 5: Solve for x
   x = 731,066,047.71/31,152.54
6. Step 6: Final answer
   x = 23,467.30