Finding the Fourth Proportional to 14,039.30, 21,053.82 and 5,271.86

Step by Step Solution

1. Step 1: Write the proportion equation
   14,039.30 : 21,053.82 = 5,271.86 : x
2. Step 2: Convert to fraction form
   14,039.30/21,053.82 = 5,271.86/x
3. Step 3: Cross multiply
   14,039.30x = 21,053.82 × 5,271.86
4. Step 4: Simplify right side
   14,039.30x = 110,992,791.51
5. Step 5: Solve for x
   x = 110,992,791.51/14,039.30
6. Step 6: Final answer
   x = 7,905.86