Finding the Fourth Proportional to 9,802.96, 13,528.20 and 5,386.96

Step by Step Solution

1. Step 1: Write the proportion equation
   9,802.96 : 13,528.20 = 5,386.96 : x
2. Step 2: Convert to fraction form
   9,802.96/13,528.20 = 5,386.96/x
3. Step 3: Cross multiply
   9,802.96x = 13,528.20 × 5,386.96
4. Step 4: Simplify right side
   9,802.96x = 72,875,872.27
5. Step 5: Solve for x
   x = 72,875,872.27/9,802.96
6. Step 6: Final answer
   x = 7,434.07