Finding the Fourth Proportional to 11,892.53, 17,838.93 and 3,128.33

Step by Step Solution

1. Step 1: Write the proportion equation
   11,892.53 : 17,838.93 = 3,128.33 : x
2. Step 2: Convert to fraction form
   11,892.53/17,838.93 = 3,128.33/x
3. Step 3: Cross multiply
   11,892.53x = 17,838.93 × 3,128.33
4. Step 4: Simplify right side
   11,892.53x = 55,806,059.89
5. Step 5: Solve for x
   x = 55,806,059.89/11,892.53
6. Step 6: Final answer
   x = 4,692.53