Finding the Fourth Proportional to 13,147.05, 19,715.71 and 3,783.91

Step by Step Solution

1. Step 1: Write the proportion equation
   13,147.05 : 19,715.71 = 3,783.91 : x
2. Step 2: Convert to fraction form
   13,147.05/19,715.71 = 3,783.91/x
3. Step 3: Cross multiply
   13,147.05x = 19,715.71 × 3,783.91
4. Step 4: Simplify right side
   13,147.05x = 74,602,354.73
5. Step 5: Solve for x
   x = 74,602,354.73/13,147.05
6. Step 6: Final answer
   x = 5,674.46