Finding the Fourth Proportional to 12,761.55, 19,128.15 and 5,363.82

Step by Step Solution

1. Step 1: Write the proportion equation
   12,761.55 : 19,128.15 = 5,363.82 : x
2. Step 2: Convert to fraction form
   12,761.55/19,128.15 = 5,363.82/x
3. Step 3: Cross multiply
   12,761.55x = 19,128.15 × 5,363.82
4. Step 4: Simplify right side
   12,761.55x = 102,599,953.53
5. Step 5: Solve for x
   x = 102,599,953.53/12,761.55
6. Step 6: Final answer
   x = 8,039.77