Finding the Fourth Proportional to 10,802.81, 14,920.29 and 7,211.52

Step by Step Solution

1. Step 1: Write the proportion equation
   10,802.81 : 14,920.29 = 7,211.52 : x
2. Step 2: Convert to fraction form
   10,802.81/14,920.29 = 7,211.52/x
3. Step 3: Cross multiply
   10,802.81x = 14,920.29 × 7,211.52
4. Step 4: Simplify right side
   10,802.81x = 107,597,984.25
5. Step 5: Solve for x
   x = 107,597,984.25/10,802.81
6. Step 6: Final answer
   x = 9,960.18