Finding the Fourth Proportional to 9,971.63, 13,760.94 and 5,495.55

Step by Step Solution

1. Step 1: Write the proportion equation
   9,971.63 : 13,760.94 = 5,495.55 : x
2. Step 2: Convert to fraction form
   9,971.63/13,760.94 = 5,495.55/x
3. Step 3: Cross multiply
   9,971.63x = 13,760.94 × 5,495.55
4. Step 4: Simplify right side
   9,971.63x = 75,623,902.82
5. Step 5: Solve for x
   x = 75,623,902.82/9,971.63
6. Step 6: Final answer
   x = 7,583.90