Finding the Fourth Proportional to 19,061.10, 28,624.05 and 14,136.30

Step by Step Solution

1. Step 1: Write the proportion equation
   19,061.10 : 28,624.05 = 14,136.30 : x
2. Step 2: Convert to fraction form
   19,061.10/28,624.05 = 14,136.30/x
3. Step 3: Cross multiply
   19,061.10x = 28,624.05 × 14,136.30
4. Step 4: Simplify right side
   19,061.10x = 404,638,158.02
5. Step 5: Solve for x
   x = 404,638,158.02/19,061.10
6. Step 6: Final answer
   x = 21,228.48