Finding the Fourth Proportional to 31,008.29, 42,792.30 and 19,064.84

Step by Step Solution

1. Step 1: Write the proportion equation
   31,008.29 : 42,792.30 = 19,064.84 : x
2. Step 2: Convert to fraction form
   31,008.29/42,792.30 = 19,064.84/x
3. Step 3: Cross multiply
   31,008.29x = 42,792.30 × 19,064.84
4. Step 4: Simplify right side
   31,008.29x = 815,828,138.77
5. Step 5: Solve for x
   x = 815,828,138.77/31,008.29
6. Step 6: Final answer
   x = 26,310.01