Finding the Fourth Proportional to 9,856.88, 14,789.20 and 4,667.12

Step by Step Solution

1. Step 1: Write the proportion equation
   9,856.88 : 14,789.20 = 4,667.12 : x
2. Step 2: Convert to fraction form
   9,856.88/14,789.20 = 4,667.12/x
3. Step 3: Cross multiply
   9,856.88x = 14,789.20 × 4,667.12
4. Step 4: Simplify right side
   9,856.88x = 69,022,971.10
5. Step 5: Solve for x
   x = 69,022,971.10/9,856.88
6. Step 6: Final answer
   x = 7,002.52