Finding the Fourth Proportional to 7,047.68, 9,725.90 and 3,903.89

Step by Step Solution

1. Step 1: Write the proportion equation
   7,047.68 : 9,725.90 = 3,903.89 : x
2. Step 2: Convert to fraction form
   7,047.68/9,725.90 = 3,903.89/x
3. Step 3: Cross multiply
   7,047.68x = 9,725.90 × 3,903.89
4. Step 4: Simplify right side
   7,047.68x = 37,968,775.60
5. Step 5: Solve for x
   x = 37,968,775.60/7,047.68
6. Step 6: Final answer
   x = 5,387.42