Finding the Fourth Proportional to 37,287.31, 51,457.71 and 21,374.77

Step by Step Solution

1. Step 1: Write the proportion equation
   37,287.31 : 51,457.71 = 21,374.77 : x
2. Step 2: Convert to fraction form
   37,287.31/51,457.71 = 21,374.77/x
3. Step 3: Cross multiply
   37,287.31x = 51,457.71 × 21,374.77
4. Step 4: Simplify right side
   37,287.31x = 1,099,896,715.98
5. Step 5: Solve for x
   x = 1,099,896,715.98/37,287.31
6. Step 6: Final answer
   x = 29,497.88