Finding the Fourth Proportional to 14,385.94, 21,580.74 and 3,997.69

Step by Step Solution

1. Step 1: Write the proportion equation
   14,385.94 : 21,580.74 = 3,997.69 : x
2. Step 2: Convert to fraction form
   14,385.94/21,580.74 = 3,997.69/x
3. Step 3: Cross multiply
   14,385.94x = 21,580.74 × 3,997.69
4. Step 4: Simplify right side
   14,385.94x = 86,273,054.54
5. Step 5: Solve for x
   x = 86,273,054.54/14,385.94
6. Step 6: Final answer
   x = 5,997.04