Finding the Fourth Proportional to 13,556.89, 20,334.69 and 5,656.15

Step by Step Solution

1. Step 1: Write the proportion equation
   13,556.89 : 20,334.69 = 5,656.15 : x
2. Step 2: Convert to fraction form
   13,556.89/20,334.69 = 5,656.15/x
3. Step 3: Cross multiply
   13,556.89x = 20,334.69 × 5,656.15
4. Step 4: Simplify right side
   13,556.89x = 115,016,056.84
5. Step 5: Solve for x
   x = 115,016,056.84/13,556.89
6. Step 6: Final answer
   x = 8,483.96