Finding the Fourth Proportional to 11,390.67, 17,086.64 and 3,598.88

Step by Step Solution

1. Step 1: Write the proportion equation
   11,390.67 : 17,086.64 = 3,598.88 : x
2. Step 2: Convert to fraction form
   11,390.67/17,086.64 = 3,598.88/x
3. Step 3: Cross multiply
   11,390.67x = 17,086.64 × 3,598.88
4. Step 4: Simplify right side
   11,390.67x = 61,492,663.54
5. Step 5: Solve for x
   x = 61,492,663.54/11,390.67
6. Step 6: Final answer
   x = 5,398.51