Finding the Fourth Proportional to 37,616.28, 56,389.86 and 12,975

Step by Step Solution

1. Step 1: Write the proportion equation
   37,616.28 : 56,389.86 = 12,975 : x
2. Step 2: Convert to fraction form
   37,616.28/56,389.86 = 12,975/x
3. Step 3: Cross multiply
   37,616.28x = 56,389.86 × 12,975
4. Step 4: Simplify right side
   37,616.28x = 731,658,433.50
5. Step 5: Solve for x
   x = 731,658,433.50/37,616.28
6. Step 6: Final answer
   x = 19,450.58