Finding the Fourth Proportional to 12,617.51, 17,405.28 and 7,835.94

Step by Step Solution

1. Step 1: Write the proportion equation
   12,617.51 : 17,405.28 = 7,835.94 : x
2. Step 2: Convert to fraction form
   12,617.51/17,405.28 = 7,835.94/x
3. Step 3: Cross multiply
   12,617.51x = 17,405.28 × 7,835.94
4. Step 4: Simplify right side
   12,617.51x = 136,386,729.76
5. Step 5: Solve for x
   x = 136,386,729.76/12,617.51
6. Step 6: Final answer
   x = 10,809.33