Finding the Fourth Proportional to 22,019.67, 30,386.61 and 12,587.63

Step by Step Solution

1. Step 1: Write the proportion equation
   22,019.67 : 30,386.61 = 12,587.63 : x
2. Step 2: Convert to fraction form
   22,019.67/30,386.61 = 12,587.63/x
3. Step 3: Cross multiply
   22,019.67x = 30,386.61 × 12,587.63
4. Step 4: Simplify right side
   22,019.67x = 382,495,251.70
5. Step 5: Solve for x
   x = 382,495,251.70/22,019.67
6. Step 6: Final answer
   x = 17,370.62