Finding the Fourth Proportional to 12,862.09, 17,749.75 and 7,196.85

Step by Step Solution

1. Step 1: Write the proportion equation
   12,862.09 : 17,749.75 = 7,196.85 : x
2. Step 2: Convert to fraction form
   12,862.09/17,749.75 = 7,196.85/x
3. Step 3: Cross multiply
   12,862.09x = 17,749.75 × 7,196.85
4. Step 4: Simplify right side
   12,862.09x = 127,742,314.15
5. Step 5: Solve for x
   x = 127,742,314.15/12,862.09
6. Step 6: Final answer
   x = 9,931.69