Finding the Fourth Proportional to 42,662.30, 63,994.66 and 13,083.12

Step by Step Solution

1. Step 1: Write the proportion equation
   42,662.30 : 63,994.66 = 13,083.12 : x
2. Step 2: Convert to fraction form
   42,662.30/63,994.66 = 13,083.12/x
3. Step 3: Cross multiply
   42,662.30x = 63,994.66 × 13,083.12
4. Step 4: Simplify right side
   42,662.30x = 837,249,783.43
5. Step 5: Solve for x
   x = 837,249,783.43/42,662.30
6. Step 6: Final answer
   x = 19,625.05