Finding the Fourth Proportional to 13,764.48, 18,994.56 and 7,476.72

Step by Step Solution

1. Step 1: Write the proportion equation
   13,764.48 : 18,994.56 = 7,476.72 : x
2. Step 2: Convert to fraction form
   13,764.48/18,994.56 = 7,476.72/x
3. Step 3: Cross multiply
   13,764.48x = 18,994.56 × 7,476.72
4. Step 4: Simplify right side
   13,764.48x = 142,017,006.64
5. Step 5: Solve for x
   x = 142,017,006.64/13,764.48
6. Step 6: Final answer
   x = 10,317.64