Finding the Fourth Proportional to 13,868.25, 19,138.32 and 7,580.76

Step by Step Solution

1. Step 1: Write the proportion equation
   13,868.25 : 19,138.32 = 7,580.76 : x
2. Step 2: Convert to fraction form
   13,868.25/19,138.32 = 7,580.76/x
3. Step 3: Cross multiply
   13,868.25x = 19,138.32 × 7,580.76
4. Step 4: Simplify right side
   13,868.25x = 145,083,010.72
5. Step 5: Solve for x
   x = 145,083,010.72/13,868.25
6. Step 6: Final answer
   x = 10,461.52