Finding the Fourth Proportional to 11,926.37, 17,892.20 and 3,921.50

Step by Step Solution

1. Step 1: Write the proportion equation
   11,926.37 : 17,892.20 = 3,921.50 : x
2. Step 2: Convert to fraction form
   11,926.37/17,892.20 = 3,921.50/x
3. Step 3: Cross multiply
   11,926.37x = 17,892.20 × 3,921.50
4. Step 4: Simplify right side
   11,926.37x = 70,164,172.84
5. Step 5: Solve for x
   x = 70,164,172.84/11,926.37
6. Step 6: Final answer
   x = 5,883.11