Finding the Fourth Proportional to 13,849.17, 19,111.59 and 7,880.72

Step by Step Solution

1. Step 1: Write the proportion equation
   13,849.17 : 19,111.59 = 7,880.72 : x
2. Step 2: Convert to fraction form
   13,849.17/19,111.59 = 7,880.72/x
3. Step 3: Cross multiply
   13,849.17x = 19,111.59 × 7,880.72
4. Step 4: Simplify right side
   13,849.17x = 150,612,993.99
5. Step 5: Solve for x
   x = 150,612,993.99/13,849.17
6. Step 6: Final answer
   x = 10,875.24