Finding the Fourth Proportional to 13,776.48, 19,011.36 and 7,488.96

Step by Step Solution

1. Step 1: Write the proportion equation
   13,776.48 : 19,011.36 = 7,488.96 : x
2. Step 2: Convert to fraction form
   13,776.48/19,011.36 = 7,488.96/x
3. Step 3: Cross multiply
   13,776.48x = 19,011.36 × 7,488.96
4. Step 4: Simplify right side
   13,776.48x = 142,375,314.59
5. Step 5: Solve for x
   x = 142,375,314.59/13,776.48
6. Step 6: Final answer
   x = 10,334.67