Finding the Fourth Proportional to 9,819.59, 13,550.80 and 5,512.57

Step by Step Solution

1. Step 1: Write the proportion equation
   9,819.59 : 13,550.80 = 5,512.57 : x
2. Step 2: Convert to fraction form
   9,819.59/13,550.80 = 5,512.57/x
3. Step 3: Cross multiply
   9,819.59x = 13,550.80 × 5,512.57
4. Step 4: Simplify right side
   9,819.59x = 74,699,719.17
5. Step 5: Solve for x
   x = 74,699,719.17/9,819.59
6. Step 6: Final answer
   x = 7,607.21