Finding the Fourth Proportional to 22,619.25, 31,214.50 and 13,665.07

Step by Step Solution

1. Step 1: Write the proportion equation
   22,619.25 : 31,214.50 = 13,665.07 : x
2. Step 2: Convert to fraction form
   22,619.25/31,214.50 = 13,665.07/x
3. Step 3: Cross multiply
   22,619.25x = 31,214.50 × 13,665.07
4. Step 4: Simplify right side
   22,619.25x = 426,548,332.37
5. Step 5: Solve for x
   x = 426,548,332.37/22,619.25
6. Step 6: Final answer
   x = 18,857.76