Finding the Fourth Proportional to 37,420.33, 56,139.47 and 12,460.60

Step by Step Solution

1. Step 1: Write the proportion equation
   37,420.33 : 56,139.47 = 12,460.60 : x
2. Step 2: Convert to fraction form
   37,420.33/56,139.47 = 12,460.60/x
3. Step 3: Cross multiply
   37,420.33x = 56,139.47 × 12,460.60
4. Step 4: Simplify right side
   37,420.33x = 699,531,332.69
5. Step 5: Solve for x
   x = 699,531,332.69/37,420.33
6. Step 6: Final answer
   x = 18,693.88