Finding the Fourth Proportional to 18,705.61, 28,061.25 and 5,556.34

Step by Step Solution

1. Step 1: Write the proportion equation
   18,705.61 : 28,061.25 = 5,556.34 : x
2. Step 2: Convert to fraction form
   18,705.61/28,061.25 = 5,556.34/x
3. Step 3: Cross multiply
   18,705.61x = 28,061.25 × 5,556.34
4. Step 4: Simplify right side
   18,705.61x = 155,917,845.83
5. Step 5: Solve for x
   x = 155,917,845.83/18,705.61
6. Step 6: Final answer
   x = 8,335.35