Finding the Fourth Proportional to 14,171.15, 21,242.86 and 5,279.99

Step by Step Solution

1. Step 1: Write the proportion equation
   14,171.15 : 21,242.86 = 5,279.99 : x
2. Step 2: Convert to fraction form
   14,171.15/21,242.86 = 5,279.99/x
3. Step 3: Cross multiply
   14,171.15x = 21,242.86 × 5,279.99
4. Step 4: Simplify right side
   14,171.15x = 112,161,968.96
5. Step 5: Solve for x
   x = 112,161,968.96/14,171.15
6. Step 6: Final answer
   x = 7,914.81