Finding the Fourth Proportional to 10,485.02, 15,730.25 and 3,911.25

Step by Step Solution

1. Step 1: Write the proportion equation
   10,485.02 : 15,730.25 = 3,911.25 : x
2. Step 2: Convert to fraction form
   10,485.02/15,730.25 = 3,911.25/x
3. Step 3: Cross multiply
   10,485.02x = 15,730.25 × 3,911.25
4. Step 4: Simplify right side
   10,485.02x = 61,524,920.76
5. Step 5: Solve for x
   x = 61,524,920.76/10,485.02
6. Step 6: Final answer
   x = 5,867.89