Finding the Fourth Proportional to 42,663.30, 63,996.16 and 13,084.12

Step by Step Solution

1. Step 1: Write the proportion equation
   42,663.30 : 63,996.16 = 13,084.12 : x
2. Step 2: Convert to fraction form
   42,663.30/63,996.16 = 13,084.12/x
3. Step 3: Cross multiply
   42,663.30x = 63,996.16 × 13,084.12
4. Step 4: Simplify right side
   42,663.30x = 837,333,436.98
5. Step 5: Solve for x
   x = 837,333,436.98/42,663.30
6. Step 6: Final answer
   x = 19,626.55