Finding the Fourth Proportional to 13,775.76, 19,010.70 and 7,488.15

Step by Step Solution

1. Step 1: Write the proportion equation
   13,775.76 : 19,010.70 = 7,488.15 : x
2. Step 2: Convert to fraction form
   13,775.76/19,010.70 = 7,488.15/x
3. Step 3: Cross multiply
   13,775.76x = 19,010.70 × 7,488.15
4. Step 4: Simplify right side
   13,775.76x = 142,354,973.21
5. Step 5: Solve for x
   x = 142,354,973.21/13,775.76
6. Step 6: Final answer
   x = 10,333.73