Finding the Fourth Proportional to 9,820.16, 14,730.24 and 8,085.14

Step by Step Solution

1. Step 1: Write the proportion equation
   9,820.16 : 14,730.24 = 8,085.14 : x
2. Step 2: Convert to fraction form
   9,820.16/14,730.24 = 8,085.14/x
3. Step 3: Cross multiply
   9,820.16x = 14,730.24 × 8,085.14
4. Step 4: Simplify right side
   9,820.16x = 119,095,978.98
5. Step 5: Solve for x
   x = 119,095,978.98/9,820.16
6. Step 6: Final answer
   x = 12,127.71