Finding the Fourth Proportional to 13,528.79, 20,300.43 and 5,636.76

Step by Step Solution

1. Step 1: Write the proportion equation
   13,528.79 : 20,300.43 = 5,636.76 : x
2. Step 2: Convert to fraction form
   13,528.79/20,300.43 = 5,636.76/x
3. Step 3: Cross multiply
   13,528.79x = 20,300.43 × 5,636.76
4. Step 4: Simplify right side
   13,528.79x = 114,428,596.82
5. Step 5: Solve for x
   x = 114,428,596.82/13,528.79
6. Step 6: Final answer
   x = 8,458.16