Finding the Fourth Proportional to 42,426.10, 63,622.95 and 12,834.10

Step by Step Solution

1. Step 1: Write the proportion equation
   42,426.10 : 63,622.95 = 12,834.10 : x
2. Step 2: Convert to fraction form
   42,426.10/63,622.95 = 12,834.10/x
3. Step 3: Cross multiply
   42,426.10x = 63,622.95 × 12,834.10
4. Step 4: Simplify right side
   42,426.10x = 816,543,302.60
5. Step 5: Solve for x
   x = 816,543,302.60/42,426.10
6. Step 6: Final answer
   x = 19,246.25