Finding the Fourth Proportional to 12,430.99, 17,150.56 and 8,445.16

Step by Step Solution

1. Step 1: Write the proportion equation
   12,430.99 : 17,150.56 = 8,445.16 : x
2. Step 2: Convert to fraction form
   12,430.99/17,150.56 = 8,445.16/x
3. Step 3: Cross multiply
   12,430.99x = 17,150.56 × 8,445.16
4. Step 4: Simplify right side
   12,430.99x = 144,839,223.29
5. Step 5: Solve for x
   x = 144,839,223.29/12,430.99
6. Step 6: Final answer
   x = 11,651.46