Finding the Fourth Proportional to 37,439.56, 56,140.56 and 12,470.83

Step by Step Solution

1. Step 1: Write the proportion equation
   37,439.56 : 56,140.56 = 12,470.83 : x
2. Step 2: Convert to fraction form
   37,439.56/56,140.56 = 12,470.83/x
3. Step 3: Cross multiply
   37,439.56x = 56,140.56 × 12,470.83
4. Step 4: Simplify right side
   37,439.56x = 700,119,379.86
5. Step 5: Solve for x
   x = 700,119,379.86/37,439.56
6. Step 6: Final answer
   x = 18,699.99