Finding the Fourth Proportional to 22,018.74, 30,384.90 and 12,587.91

Step by Step Solution

1. Step 1: Write the proportion equation
   22,018.74 : 30,384.90 = 12,587.91 : x
2. Step 2: Convert to fraction form
   22,018.74/30,384.90 = 12,587.91/x
3. Step 3: Cross multiply
   22,018.74x = 30,384.90 × 12,587.91
4. Step 4: Simplify right side
   22,018.74x = 382,482,386.56
5. Step 5: Solve for x
   x = 382,482,386.56/22,018.74
6. Step 6: Final answer
   x = 17,370.77