Finding the Fourth Proportional to 37,388.32, 56,092.56 and 12,432.40

Step by Step Solution

1. Step 1: Write the proportion equation
   37,388.32 : 56,092.56 = 12,432.40 : x
2. Step 2: Convert to fraction form
   37,388.32/56,092.56 = 12,432.40/x
3. Step 3: Cross multiply
   37,388.32x = 56,092.56 × 12,432.40
4. Step 4: Simplify right side
   37,388.32x = 697,365,142.94
5. Step 5: Solve for x
   x = 697,365,142.94/37,388.32
6. Step 6: Final answer
   x = 18,651.95