Finding the Fourth Proportional to 37,636.99, 56,443.72 and 13,618.26

Step by Step Solution

1. Step 1: Write the proportion equation
   37,636.99 : 56,443.72 = 13,618.26 : x
2. Step 2: Convert to fraction form
   37,636.99/56,443.72 = 13,618.26/x
3. Step 3: Cross multiply
   37,636.99x = 56,443.72 × 13,618.26
4. Step 4: Simplify right side
   37,636.99x = 768,665,254.33
5. Step 5: Solve for x
   x = 768,665,254.33/37,636.99
6. Step 6: Final answer
   x = 20,423.13