Finding the Fourth Proportional to 37,390.55, 56,073.69 and 12,423.89

Step by Step Solution

1. Step 1: Write the proportion equation
   37,390.55 : 56,073.69 = 12,423.89 : x
2. Step 2: Convert to fraction form
   37,390.55/56,073.69 = 12,423.89/x
3. Step 3: Cross multiply
   37,390.55x = 56,073.69 × 12,423.89
4. Step 4: Simplify right side
   37,390.55x = 696,653,294.33
5. Step 5: Solve for x
   x = 696,653,294.33/37,390.55
6. Step 6: Final answer
   x = 18,631.80