Finding the Fourth Proportional to 12,429.42, 17,130.06 and 9,066.84

Step by Step Solution

1. Step 1: Write the proportion equation
   12,429.42 : 17,130.06 = 9,066.84 : x
2. Step 2: Convert to fraction form
   12,429.42/17,130.06 = 9,066.84/x
3. Step 3: Cross multiply
   12,429.42x = 17,130.06 × 9,066.84
4. Step 4: Simplify right side
   12,429.42x = 155,315,513.21
5. Step 5: Solve for x
   x = 155,315,513.21/12,429.42
6. Step 6: Final answer
   x = 12,495.80