Finding the Fourth Proportional to 9,513.30, 13,129.73 and 5,536.60

Step by Step Solution

1. Step 1: Write the proportion equation
   9,513.30 : 13,129.73 = 5,536.60 : x
2. Step 2: Convert to fraction form
   9,513.30/13,129.73 = 5,536.60/x
3. Step 3: Cross multiply
   9,513.30x = 13,129.73 × 5,536.60
4. Step 4: Simplify right side
   9,513.30x = 72,694,097.23
5. Step 5: Solve for x
   x = 72,694,097.23/9,513.30
6. Step 6: Final answer
   x = 7,641.31