Finding the Fourth Proportional to 22,019.94, 30,387.53 and 12,588.70

Step by Step Solution

1. Step 1: Write the proportion equation
   22,019.94 : 30,387.53 = 12,588.70 : x
2. Step 2: Convert to fraction form
   22,019.94/30,387.53 = 12,588.70/x
3. Step 3: Cross multiply
   22,019.94x = 30,387.53 × 12,588.70
4. Step 4: Simplify right side
   22,019.94x = 382,539,498.91
5. Step 5: Solve for x
   x = 382,539,498.91/22,019.94
6. Step 6: Final answer
   x = 17,372.41