Finding the Fourth Proportional to 13,081.52, 18,052.54 and 7,113.18

Step by Step Solution

1. Step 1: Write the proportion equation
   13,081.52 : 18,052.54 = 7,113.18 : x
2. Step 2: Convert to fraction form
   13,081.52/18,052.54 = 7,113.18/x
3. Step 3: Cross multiply
   13,081.52x = 18,052.54 × 7,113.18
4. Step 4: Simplify right side
   13,081.52x = 128,410,966.48
5. Step 5: Solve for x
   x = 128,410,966.48/13,081.52
6. Step 6: Final answer
   x = 9,816.21