Finding the Fourth Proportional to 12,755.30, 17,603.29 and 7,090.51

Step by Step Solution

1. Step 1: Write the proportion equation
   12,755.30 : 17,603.29 = 7,090.51 : x
2. Step 2: Convert to fraction form
   12,755.30/17,603.29 = 7,090.51/x
3. Step 3: Cross multiply
   12,755.30x = 17,603.29 × 7,090.51
4. Step 4: Simplify right side
   12,755.30x = 124,816,303.78
5. Step 5: Solve for x
   x = 124,816,303.78/12,755.30
6. Step 6: Final answer
   x = 9,785.45