Finding the Fourth Proportional to 22,603.21, 31,192.83 and 12,395.07

Step by Step Solution

1. Step 1: Write the proportion equation
   22,603.21 : 31,192.83 = 12,395.07 : x
2. Step 2: Convert to fraction form
   22,603.21/31,192.83 = 12,395.07/x
3. Step 3: Cross multiply
   22,603.21x = 31,192.83 × 12,395.07
4. Step 4: Simplify right side
   22,603.21x = 386,637,311.35
5. Step 5: Solve for x
   x = 386,637,311.35/22,603.21
6. Step 6: Final answer
   x = 17,105.42