Finding the Fourth Proportional to 14,385.69, 21,576.99 and 3,856.76

Step by Step Solution

1. Step 1: Write the proportion equation
   14,385.69 : 21,576.99 = 3,856.76 : x
2. Step 2: Convert to fraction form
   14,385.69/21,576.99 = 3,856.76/x
3. Step 3: Cross multiply
   14,385.69x = 21,576.99 × 3,856.76
4. Step 4: Simplify right side
   14,385.69x = 83,217,335.54
5. Step 5: Solve for x
   x = 83,217,335.54/14,385.69
6. Step 6: Final answer
   x = 5,784.73