Finding the Fourth Proportional to 14,617.98, 21,921.59 and 5,255.51

Step by Step Solution

1. Step 1: Write the proportion equation
   14,617.98 : 21,921.59 = 5,255.51 : x
2. Step 2: Convert to fraction form
   14,617.98/21,921.59 = 5,255.51/x
3. Step 3: Cross multiply
   14,617.98x = 21,921.59 × 5,255.51
4. Step 4: Simplify right side
   14,617.98x = 115,208,999.58
5. Step 5: Solve for x
   x = 115,208,999.58/14,617.98
6. Step 6: Final answer
   x = 7,881.32