Finding the Fourth Proportional to 42,545.10, 63,826.86 and 12,962.16

Step by Step Solution

1. Step 1: Write the proportion equation
   42,545.10 : 63,826.86 = 12,962.16 : x
2. Step 2: Convert to fraction form
   42,545.10/63,826.86 = 12,962.16/x
3. Step 3: Cross multiply
   42,545.10x = 63,826.86 × 12,962.16
4. Step 4: Simplify right side
   42,545.10x = 827,333,971.62
5. Step 5: Solve for x
   x = 827,333,971.62/42,545.10
6. Step 6: Final answer
   x = 19,446.05