Finding the Fourth Proportional to 37,131.23, 51,236.37 and 21,216.71

Step by Step Solution

1. Step 1: Write the proportion equation
   37,131.23 : 51,236.37 = 21,216.71 : x
2. Step 2: Convert to fraction form
   37,131.23/51,236.37 = 21,216.71/x
3. Step 3: Cross multiply
   37,131.23x = 51,236.37 × 21,216.71
4. Step 4: Simplify right side
   37,131.23x = 1,087,066,947.56
5. Step 5: Solve for x
   x = 1,087,066,947.56/37,131.23
6. Step 6: Final answer
   x = 29,276.36