Finding the Fourth Proportional to 13,122.72, 19,678.15 and 3,760.59

Step by Step Solution

1. Step 1: Write the proportion equation
   13,122.72 : 19,678.15 = 3,760.59 : x
2. Step 2: Convert to fraction form
   13,122.72/19,678.15 = 3,760.59/x
3. Step 3: Cross multiply
   13,122.72x = 19,678.15 × 3,760.59
4. Step 4: Simplify right side
   13,122.72x = 74,001,435.31
5. Step 5: Solve for x
   x = 74,001,435.31/13,122.72
6. Step 6: Final answer
   x = 5,639.19