Finding the Fourth Proportional to 9,928.79, 14,888.81 and 4,665.30

Step by Step Solution

1. Step 1: Write the proportion equation
   9,928.79 : 14,888.81 = 4,665.30 : x
2. Step 2: Convert to fraction form
   9,928.79/14,888.81 = 4,665.30/x
3. Step 3: Cross multiply
   9,928.79x = 14,888.81 × 4,665.30
4. Step 4: Simplify right side
   9,928.79x = 69,460,690.85
5. Step 5: Solve for x
   x = 69,460,690.85/9,928.79
6. Step 6: Final answer
   x = 6,995.89