Finding the Fourth Proportional to 22,468.69, 30,997.18 and 13,510.90

Step by Step Solution

1. Step 1: Write the proportion equation
   22,468.69 : 30,997.18 = 13,510.90 : x
2. Step 2: Convert to fraction form
   22,468.69/30,997.18 = 13,510.90/x
3. Step 3: Cross multiply
   22,468.69x = 30,997.18 × 13,510.90
4. Step 4: Simplify right side
   22,468.69x = 418,799,799.26
5. Step 5: Solve for x
   x = 418,799,799.26/22,468.69
6. Step 6: Final answer
   x = 18,639.26