Finding the Fourth Proportional to 10,478.52, 15,719.73 and 3,459.03

Step by Step Solution

1. Step 1: Write the proportion equation
   10,478.52 : 15,719.73 = 3,459.03 : x
2. Step 2: Convert to fraction form
   10,478.52/15,719.73 = 3,459.03/x
3. Step 3: Cross multiply
   10,478.52x = 15,719.73 × 3,459.03
4. Step 4: Simplify right side
   10,478.52x = 54,374,945.74
5. Step 5: Solve for x
   x = 54,374,945.74/10,478.52
6. Step 6: Final answer
   x = 5,189.18