Finding the Fourth Proportional to 10,617, 15,928.86 and 4,774.12

Step by Step Solution

1. Step 1: Write the proportion equation
   10,617 : 15,928.86 = 4,774.12 : x
2. Step 2: Convert to fraction form
   10,617/15,928.86 = 4,774.12/x
3. Step 3: Cross multiply
   10,617x = 15,928.86 × 4,774.12
4. Step 4: Simplify right side
   10,617x = 76,046,289.10
5. Step 5: Solve for x
   x = 76,046,289.10/10,617
6. Step 6: Final answer
   x = 7,162.69