Finding the Fourth Proportional to 11,598.50, 17,400.63 and 3,390.50

Step by Step Solution

1. Step 1: Write the proportion equation
   11,598.50 : 17,400.63 = 3,390.50 : x
2. Step 2: Convert to fraction form
   11,598.50/17,400.63 = 3,390.50/x
3. Step 3: Cross multiply
   11,598.50x = 17,400.63 × 3,390.50
4. Step 4: Simplify right side
   11,598.50x = 58,996,836.02
5. Step 5: Solve for x
   x = 58,996,836.02/11,598.50
6. Step 6: Final answer
   x = 5,086.59