Finding the Fourth Proportional to 13,830.56, 19,086.56 and 7,543.04

Step by Step Solution

1. Step 1: Write the proportion equation
   13,830.56 : 19,086.56 = 7,543.04 : x
2. Step 2: Convert to fraction form
   13,830.56/19,086.56 = 7,543.04/x
3. Step 3: Cross multiply
   13,830.56x = 19,086.56 × 7,543.04
4. Step 4: Simplify right side
   13,830.56x = 143,970,685.54
5. Step 5: Solve for x
   x = 143,970,685.54/13,830.56
6. Step 6: Final answer
   x = 10,409.61