Finding the Fourth Proportional to 9,547.45, 13,172.50 and 5,513.76

Step by Step Solution

1. Step 1: Write the proportion equation
   9,547.45 : 13,172.50 = 5,513.76 : x
2. Step 2: Convert to fraction form
   9,547.45/13,172.50 = 5,513.76/x
3. Step 3: Cross multiply
   9,547.45x = 13,172.50 × 5,513.76
4. Step 4: Simplify right side
   9,547.45x = 72,630,003.60
5. Step 5: Solve for x
   x = 72,630,003.60/9,547.45
6. Step 6: Final answer
   x = 7,607.27