Finding the Fourth Proportional to 13,008.69, 19,513.09 and 3,147.95

Step by Step Solution

1. Step 1: Write the proportion equation
   13,008.69 : 19,513.09 = 3,147.95 : x
2. Step 2: Convert to fraction form
   13,008.69/19,513.09 = 3,147.95/x
3. Step 3: Cross multiply
   13,008.69x = 19,513.09 × 3,147.95
4. Step 4: Simplify right side
   13,008.69x = 61,426,264.71
5. Step 5: Solve for x
   x = 61,426,264.71/13,008.69
6. Step 6: Final answer
   x = 4,721.94