Finding the Fourth Proportional to 12,864.29, 17,749.40 and 7,558.07

Step by Step Solution

1. Step 1: Write the proportion equation
   12,864.29 : 17,749.40 = 7,558.07 : x
2. Step 2: Convert to fraction form
   12,864.29/17,749.40 = 7,558.07/x
3. Step 3: Cross multiply
   12,864.29x = 17,749.40 × 7,558.07
4. Step 4: Simplify right side
   12,864.29x = 134,151,081.12
5. Step 5: Solve for x
   x = 134,151,081.12/12,864.29
6. Step 6: Final answer
   x = 10,428.18