Finding the Fourth Proportional to 37,317.36, 51,496.38 and 21,390.72

Step by Step Solution

1. Step 1: Write the proportion equation
   37,317.36 : 51,496.38 = 21,390.72 : x
2. Step 2: Convert to fraction form
   37,317.36/51,496.38 = 21,390.72/x
3. Step 3: Cross multiply
   37,317.36x = 51,496.38 × 21,390.72
4. Step 4: Simplify right side
   37,317.36x = 1,101,544,645.59
5. Step 5: Solve for x
   x = 1,101,544,645.59/37,317.36
6. Step 6: Final answer
   x = 29,518.29