Finding the Fourth Proportional to 23,213.22, 31,997.91 and 19,429.71

Step by Step Solution

1. Step 1: Write the proportion equation
   23,213.22 : 31,997.91 = 19,429.71 : x
2. Step 2: Convert to fraction form
   23,213.22/31,997.91 = 19,429.71/x
3. Step 3: Cross multiply
   23,213.22x = 31,997.91 × 19,429.71
4. Step 4: Simplify right side
   23,213.22x = 621,710,111.91
5. Step 5: Solve for x
   x = 621,710,111.91/23,213.22
6. Step 6: Final answer
   x = 26,782.59