Finding the Fourth Proportional to 10,365.56, 15,534.42 and 5,678.52

Step by Step Solution

1. Step 1: Write the proportion equation
   10,365.56 : 15,534.42 = 5,678.52 : x
2. Step 2: Convert to fraction form
   10,365.56/15,534.42 = 5,678.52/x
3. Step 3: Cross multiply
   10,365.56x = 15,534.42 × 5,678.52
4. Step 4: Simplify right side
   10,365.56x = 88,212,514.66
5. Step 5: Solve for x
   x = 88,212,514.66/10,365.56
6. Step 6: Final answer
   x = 8,510.15