Finding the Fourth Proportional to 14,111.79, 21,169.52 and 4,747.79

Step by Step Solution

1. Step 1: Write the proportion equation
   14,111.79 : 21,169.52 = 4,747.79 : x
2. Step 2: Convert to fraction form
   14,111.79/21,169.52 = 4,747.79/x
3. Step 3: Cross multiply
   14,111.79x = 21,169.52 × 4,747.79
4. Step 4: Simplify right side
   14,111.79x = 100,508,305.77
5. Step 5: Solve for x
   x = 100,508,305.77/14,111.79
6. Step 6: Final answer
   x = 7,122.29