Finding the Fourth Proportional to 14,055.72, 21,085.86 and 5,291.28

Step by Step Solution

1. Step 1: Write the proportion equation
   14,055.72 : 21,085.86 = 5,291.28 : x
2. Step 2: Convert to fraction form
   14,055.72/21,085.86 = 5,291.28/x
3. Step 3: Cross multiply
   14,055.72x = 21,085.86 × 5,291.28
4. Step 4: Simplify right side
   14,055.72x = 111,571,189.30
5. Step 5: Solve for x
   x = 111,571,189.30/14,055.72
6. Step 6: Final answer
   x = 7,937.78