Finding the Fourth Proportional to 37,910.70, 56,871.72 and 12,256.47

Step by Step Solution

1. Step 1: Write the proportion equation
   37,910.70 : 56,871.72 = 12,256.47 : x
2. Step 2: Convert to fraction form
   37,910.70/56,871.72 = 12,256.47/x
3. Step 3: Cross multiply
   37,910.70x = 56,871.72 × 12,256.47
4. Step 4: Simplify right side
   37,910.70x = 697,046,530.03
5. Step 5: Solve for x
   x = 697,046,530.03/37,910.70
6. Step 6: Final answer
   x = 18,386.54