Finding the Fourth Proportional to 13,775.81, 19,010.72 and 7,488.19

Step by Step Solution

1. Step 1: Write the proportion equation
   13,775.81 : 19,010.72 = 7,488.19 : x
2. Step 2: Convert to fraction form
   13,775.81/19,010.72 = 7,488.19/x
3. Step 3: Cross multiply
   13,775.81x = 19,010.72 × 7,488.19
4. Step 4: Simplify right side
   13,775.81x = 142,355,750.90
5. Step 5: Solve for x
   x = 142,355,750.90/13,775.81
6. Step 6: Final answer
   x = 10,333.75