Finding the Fourth Proportional to 35,072.37, 52,615.71 and 12,885.96

Step by Step Solution

1. Step 1: Write the proportion equation
   35,072.37 : 52,615.71 = 12,885.96 : x
2. Step 2: Convert to fraction form
   35,072.37/52,615.71 = 12,885.96/x
3. Step 3: Cross multiply
   35,072.37x = 52,615.71 × 12,885.96
4. Step 4: Simplify right side
   35,072.37x = 678,003,934.43
5. Step 5: Solve for x
   x = 678,003,934.43/35,072.37
6. Step 6: Final answer
   x = 19,331.57