Finding the Fourth Proportional to 37,729.64, 56,593.82 and 13,105

Step by Step Solution

1. Step 1: Write the proportion equation
   37,729.64 : 56,593.82 = 13,105 : x
2. Step 2: Convert to fraction form
   37,729.64/56,593.82 = 13,105/x
3. Step 3: Cross multiply
   37,729.64x = 56,593.82 × 13,105
4. Step 4: Simplify right side
   37,729.64x = 741,662,011.10
5. Step 5: Solve for x
   x = 741,662,011.10/37,729.64
6. Step 6: Final answer
   x = 19,657.28