Finding the Fourth Proportional to 17,603.69, 26,409.85 and 5,123.82

Step by Step Solution

1. Step 1: Write the proportion equation
   17,603.69 : 26,409.85 = 5,123.82 : x
2. Step 2: Convert to fraction form
   17,603.69/26,409.85 = 5,123.82/x
3. Step 3: Cross multiply
   17,603.69x = 26,409.85 × 5,123.82
4. Step 4: Simplify right side
   17,603.69x = 135,319,317.63
5. Step 5: Solve for x
   x = 135,319,317.63/17,603.69
6. Step 6: Final answer
   x = 7,686.99