Finding the Fourth Proportional to 11,927.50, 17,891.90 and 3,607.31

Step by Step Solution

1. Step 1: Write the proportion equation
   11,927.50 : 17,891.90 = 3,607.31 : x
2. Step 2: Convert to fraction form
   11,927.50/17,891.90 = 3,607.31/x
3. Step 3: Cross multiply
   11,927.50x = 17,891.90 × 3,607.31
4. Step 4: Simplify right side
   11,927.50x = 64,541,611.75
5. Step 5: Solve for x
   x = 64,541,611.75/11,927.50
6. Step 6: Final answer
   x = 5,411.16