Finding the Fourth Proportional to 9,474.66, 13,072.50 and 9,100.98

Step by Step Solution

1. Step 1: Write the proportion equation
   9,474.66 : 13,072.50 = 9,100.98 : x
2. Step 2: Convert to fraction form
   9,474.66/13,072.50 = 9,100.98/x
3. Step 3: Cross multiply
   9,474.66x = 13,072.50 × 9,100.98
4. Step 4: Simplify right side
   9,474.66x = 118,972,561.05
5. Step 5: Solve for x
   x = 118,972,561.05/9,474.66
6. Step 6: Final answer
   x = 12,556.92