Finding the Fourth Proportional to 11,406.84, 17,112.78 and 3,615.42

Step by Step Solution

1. Step 1: Write the proportion equation
   11,406.84 : 17,112.78 = 3,615.42 : x
2. Step 2: Convert to fraction form
   11,406.84/17,112.78 = 3,615.42/x
3. Step 3: Cross multiply
   11,406.84x = 17,112.78 × 3,615.42
4. Step 4: Simplify right side
   11,406.84x = 61,869,887.07
5. Step 5: Solve for x
   x = 61,869,887.07/11,406.84
6. Step 6: Final answer
   x = 5,423.93