Finding the Fourth Proportional to 22,887.56, 31,588.18 and 13,940.30

Step by Step Solution

1. Step 1: Write the proportion equation
   22,887.56 : 31,588.18 = 13,940.30 : x
2. Step 2: Convert to fraction form
   22,887.56/31,588.18 = 13,940.30/x
3. Step 3: Cross multiply
   22,887.56x = 31,588.18 × 13,940.30
4. Step 4: Simplify right side
   22,887.56x = 440,348,705.65
5. Step 5: Solve for x
   x = 440,348,705.65/22,887.56
6. Step 6: Final answer
   x = 19,239.65