Finding the Fourth Proportional to 11,409.42, 17,111.73 and 3,199.50

Step by Step Solution

1. Step 1: Write the proportion equation
   11,409.42 : 17,111.73 = 3,199.50 : x
2. Step 2: Convert to fraction form
   11,409.42/17,111.73 = 3,199.50/x
3. Step 3: Cross multiply
   11,409.42x = 17,111.73 × 3,199.50
4. Step 4: Simplify right side
   11,409.42x = 54,748,980.14
5. Step 5: Solve for x
   x = 54,748,980.14/11,409.42
6. Step 6: Final answer
   x = 4,798.58