Finding the Fourth Proportional to 12,477.42, 17,222.58 and 7,445.16

Step by Step Solution

1. Step 1: Write the proportion equation
   12,477.42 : 17,222.58 = 7,445.16 : x
2. Step 2: Convert to fraction form
   12,477.42/17,222.58 = 7,445.16/x
3. Step 3: Cross multiply
   12,477.42x = 17,222.58 × 7,445.16
4. Step 4: Simplify right side
   12,477.42x = 128,224,863.71
5. Step 5: Solve for x
   x = 128,224,863.71/12,477.42
6. Step 6: Final answer
   x = 10,276.55