Finding the Fourth Proportional to 22,714.20, 34,066.14 and 7,128.12

Step by Step Solution

1. Step 1: Write the proportion equation
   22,714.20 : 34,066.14 = 7,128.12 : x
2. Step 2: Convert to fraction form
   22,714.20/34,066.14 = 7,128.12/x
3. Step 3: Cross multiply
   22,714.20x = 34,066.14 × 7,128.12
4. Step 4: Simplify right side
   22,714.20x = 242,827,533.86
5. Step 5: Solve for x
   x = 242,827,533.86/22,714.20
6. Step 6: Final answer
   x = 10,690.56