Finding the Fourth Proportional to 42,619.25, 63,918.61 and 13,037.34

Step by Step Solution

1. Step 1: Write the proportion equation
   42,619.25 : 63,918.61 = 13,037.34 : x
2. Step 2: Convert to fraction form
   42,619.25/63,918.61 = 13,037.34/x
3. Step 3: Cross multiply
   42,619.25x = 63,918.61 × 13,037.34
4. Step 4: Simplify right side
   42,619.25x = 833,328,650.90
5. Step 5: Solve for x
   x = 833,328,650.90/42,619.25
6. Step 6: Final answer
   x = 19,552.87