Finding the Fourth Proportional to 10,908.28, 14,948.53 and 9,858.52

Step by Step Solution

1. Step 1: Write the proportion equation
   10,908.28 : 14,948.53 = 9,858.52 : x
2. Step 2: Convert to fraction form
   10,908.28/14,948.53 = 9,858.52/x
3. Step 3: Cross multiply
   10,908.28x = 14,948.53 × 9,858.52
4. Step 4: Simplify right side
   10,908.28x = 147,370,381.98
5. Step 5: Solve for x
   x = 147,370,381.98/10,908.28
6. Step 6: Final answer
   x = 13,509.96