Finding the Fourth Proportional to 22,453.76, 30,988.27 and 12,894.91

Step by Step Solution

1. Step 1: Write the proportion equation
   22,453.76 : 30,988.27 = 12,894.91 : x
2. Step 2: Convert to fraction form
   22,453.76/30,988.27 = 12,894.91/x
3. Step 3: Cross multiply
   22,453.76x = 30,988.27 × 12,894.91
4. Step 4: Simplify right side
   22,453.76x = 399,590,891.35
5. Step 5: Solve for x
   x = 399,590,891.35/22,453.76
6. Step 6: Final answer
   x = 17,796.17