Finding the Fourth Proportional to 37,869.69, 56,811.26 and 12,570.72

Step by Step Solution

1. Step 1: Write the proportion equation
   37,869.69 : 56,811.26 = 12,570.72 : x
2. Step 2: Convert to fraction form
   37,869.69/56,811.26 = 12,570.72/x
3. Step 3: Cross multiply
   37,869.69x = 56,811.26 × 12,570.72
4. Step 4: Simplify right side
   37,869.69x = 714,158,442.31
5. Step 5: Solve for x
   x = 714,158,442.31/37,869.69
6. Step 6: Final answer
   x = 18,858.31