Finding the Fourth Proportional to 37,071.81, 51,155.87 and 21,961.76

Step by Step Solution

1. Step 1: Write the proportion equation
   37,071.81 : 51,155.87 = 21,961.76 : x
2. Step 2: Convert to fraction form
   37,071.81/51,155.87 = 21,961.76/x
3. Step 3: Cross multiply
   37,071.81x = 51,155.87 × 21,961.76
4. Step 4: Simplify right side
   37,071.81x = 1,123,472,573.94
5. Step 5: Solve for x
   x = 1,123,472,573.94/37,071.81
6. Step 6: Final answer
   x = 30,305.31