Finding the Fourth Proportional to 19,061.61, 26,282.15 and 16,404.45

Step by Step Solution

1. Step 1: Write the proportion equation
   19,061.61 : 26,282.15 = 16,404.45 : x
2. Step 2: Convert to fraction form
   19,061.61/26,282.15 = 16,404.45/x
3. Step 3: Cross multiply
   19,061.61x = 26,282.15 × 16,404.45
4. Step 4: Simplify right side
   19,061.61x = 431,144,133.55
5. Step 5: Solve for x
   x = 431,144,133.55/19,061.61
6. Step 6: Final answer
   x = 22,618.45