Finding the Fourth Proportional to 13,081.84, 18,053 and 7,113.52

Step by Step Solution

1. Step 1: Write the proportion equation
   13,081.84 : 18,053 = 7,113.52 : x
2. Step 2: Convert to fraction form
   13,081.84/18,053 = 7,113.52/x
3. Step 3: Cross multiply
   13,081.84x = 18,053 × 7,113.52
4. Step 4: Simplify right side
   13,081.84x = 128,420,376.56
5. Step 5: Solve for x
   x = 128,420,376.56/13,081.84
6. Step 6: Final answer
   x = 9,816.69