Finding the Fourth Proportional to 12,848.34, 17,730.72 and 7,543.20

Step by Step Solution

1. Step 1: Write the proportion equation
   12,848.34 : 17,730.72 = 7,543.20 : x
2. Step 2: Convert to fraction form
   12,848.34/17,730.72 = 7,543.20/x
3. Step 3: Cross multiply
   12,848.34x = 17,730.72 × 7,543.20
4. Step 4: Simplify right side
   12,848.34x = 133,746,367.10
5. Step 5: Solve for x
   x = 133,746,367.10/12,848.34
6. Step 6: Final answer
   x = 10,409.62