Finding the Fourth Proportional to 13,764.94, 18,995.72 and 7,477.31

Step by Step Solution

1. Step 1: Write the proportion equation
   13,764.94 : 18,995.72 = 7,477.31 : x
2. Step 2: Convert to fraction form
   13,764.94/18,995.72 = 7,477.31/x
3. Step 3: Cross multiply
   13,764.94x = 18,995.72 × 7,477.31
4. Step 4: Simplify right side
   13,764.94x = 142,036,897.22
5. Step 5: Solve for x
   x = 142,036,897.22/13,764.94
6. Step 6: Final answer
   x = 10,318.75