Finding the Fourth Proportional to 22,175.91, 30,603.11 and 12,615.57

Step by Step Solution

1. Step 1: Write the proportion equation
   22,175.91 : 30,603.11 = 12,615.57 : x
2. Step 2: Convert to fraction form
   22,175.91/30,603.11 = 12,615.57/x
3. Step 3: Cross multiply
   22,175.91x = 30,603.11 × 12,615.57
4. Step 4: Simplify right side
   22,175.91x = 386,075,613.34
5. Step 5: Solve for x
   x = 386,075,613.34/22,175.91
6. Step 6: Final answer
   x = 17,409.69