Finding the Fourth Proportional to 22,087.91, 30,482.16 and 12,658.30

Step by Step Solution

1. Step 1: Write the proportion equation
   22,087.91 : 30,482.16 = 12,658.30 : x
2. Step 2: Convert to fraction form
   22,087.91/30,482.16 = 12,658.30/x
3. Step 3: Cross multiply
   22,087.91x = 30,482.16 × 12,658.30
4. Step 4: Simplify right side
   22,087.91x = 385,852,110.23
5. Step 5: Solve for x
   x = 385,852,110.23/22,087.91
6. Step 6: Final answer
   x = 17,468.93