Finding the Fourth Proportional to 37,648.35, 56,469.47 and 12,687.86

Step by Step Solution

1. Step 1: Write the proportion equation
   37,648.35 : 56,469.47 = 12,687.86 : x
2. Step 2: Convert to fraction form
   37,648.35/56,469.47 = 12,687.86/x
3. Step 3: Cross multiply
   37,648.35x = 56,469.47 × 12,687.86
4. Step 4: Simplify right side
   37,648.35x = 716,476,807.37
5. Step 5: Solve for x
   x = 716,476,807.37/37,648.35
6. Step 6: Final answer
   x = 19,030.76