Finding the Fourth Proportional to 42,209.07, 63,315.72 and 12,627.15

Step by Step Solution

1. Step 1: Write the proportion equation
   42,209.07 : 63,315.72 = 12,627.15 : x
2. Step 2: Convert to fraction form
   42,209.07/63,315.72 = 12,627.15/x
3. Step 3: Cross multiply
   42,209.07x = 63,315.72 × 12,627.15
4. Step 4: Simplify right side
   42,209.07x = 799,497,093.80
5. Step 5: Solve for x
   x = 799,497,093.80/42,209.07
6. Step 6: Final answer
   x = 18,941.36