Finding the Fourth Proportional to 7,039.72, 9,714.90 and 3,895.88

Step by Step Solution

1. Step 1: Write the proportion equation
   7,039.72 : 9,714.90 = 3,895.88 : x
2. Step 2: Convert to fraction form
   7,039.72/9,714.90 = 3,895.88/x
3. Step 3: Cross multiply
   7,039.72x = 9,714.90 × 3,895.88
4. Step 4: Simplify right side
   7,039.72x = 37,848,084.61
5. Step 5: Solve for x
   x = 37,848,084.61/7,039.72
6. Step 6: Final answer
   x = 5,376.36