Finding the Fourth Proportional to 22,617.77, 31,212.59 and 13,663.62

Step by Step Solution

1. Step 1: Write the proportion equation
   22,617.77 : 31,212.59 = 13,663.62 : x
2. Step 2: Convert to fraction form
   22,617.77/31,212.59 = 13,663.62/x
3. Step 3: Cross multiply
   22,617.77x = 31,212.59 × 13,663.62
4. Step 4: Simplify right side
   22,617.77x = 426,476,900.66
5. Step 5: Solve for x
   x = 426,476,900.66/22,617.77
6. Step 6: Final answer
   x = 18,855.84