Finding the Fourth Proportional to 12,628.01, 17,419.52 and 7,904.09

Step by Step Solution

1. Step 1: Write the proportion equation
   12,628.01 : 17,419.52 = 7,904.09 : x
2. Step 2: Convert to fraction form
   12,628.01/17,419.52 = 7,904.09/x
3. Step 3: Cross multiply
   12,628.01x = 17,419.52 × 7,904.09
4. Step 4: Simplify right side
   12,628.01x = 137,685,327.22
5. Step 5: Solve for x
   x = 137,685,327.22/12,628.01
6. Step 6: Final answer
   x = 10,903.17