Finding the Fourth Proportional to 14,047.30, 21,065.82 and 5,279.86

Step by Step Solution

1. Step 1: Write the proportion equation
   14,047.30 : 21,065.82 = 5,279.86 : x
2. Step 2: Convert to fraction form
   14,047.30/21,065.82 = 5,279.86/x
3. Step 3: Cross multiply
   14,047.30x = 21,065.82 × 5,279.86
4. Step 4: Simplify right side
   14,047.30x = 111,224,580.39
5. Step 5: Solve for x
   x = 111,224,580.39/14,047.30
6. Step 6: Final answer
   x = 7,917.86