Finding the Fourth Proportional to 37,109.76, 51,215.76 and 21,196.50

Step by Step Solution

1. Step 1: Write the proportion equation
   37,109.76 : 51,215.76 = 21,196.50 : x
2. Step 2: Convert to fraction form
   37,109.76/51,215.76 = 21,196.50/x
3. Step 3: Cross multiply
   37,109.76x = 51,215.76 × 21,196.50
4. Step 4: Simplify right side
   37,109.76x = 1,085,594,856.84
5. Step 5: Solve for x
   x = 1,085,594,856.84/37,109.76
6. Step 6: Final answer
   x = 29,253.62