Finding the Fourth Proportional to 37,447.56, 56,152.53 and 12,478.86

Step by Step Solution

1. Step 1: Write the proportion equation
   37,447.56 : 56,152.53 = 12,478.86 : x
2. Step 2: Convert to fraction form
   37,447.56/56,152.53 = 12,478.86/x
3. Step 3: Cross multiply
   37,447.56x = 56,152.53 × 12,478.86
4. Step 4: Simplify right side
   37,447.56x = 700,719,560.52
5. Step 5: Solve for x
   x = 700,719,560.52/37,447.56
6. Step 6: Final answer
   x = 18,712.02