Finding the Fourth Proportional to 37,868.69, 56,809.76 and 12,569.72

Step by Step Solution

1. Step 1: Write the proportion equation
   37,868.69 : 56,809.76 = 12,569.72 : x
2. Step 2: Convert to fraction form
   37,868.69/56,809.76 = 12,569.72/x
3. Step 3: Cross multiply
   37,868.69x = 56,809.76 × 12,569.72
4. Step 4: Simplify right side
   37,868.69x = 714,082,429.57
5. Step 5: Solve for x
   x = 714,082,429.57/37,868.69
6. Step 6: Final answer
   x = 18,856.81