Finding the Fourth Proportional to 13,776.54, 19,011.81 and 7,488.91

Step by Step Solution

1. Step 1: Write the proportion equation
   13,776.54 : 19,011.81 = 7,488.91 : x
2. Step 2: Convert to fraction form
   13,776.54/19,011.81 = 7,488.91/x
3. Step 3: Cross multiply
   13,776.54x = 19,011.81 × 7,488.91
4. Step 4: Simplify right side
   13,776.54x = 142,377,734.03
5. Step 5: Solve for x
   x = 142,377,734.03/13,776.54
6. Step 6: Final answer
   x = 10,334.80