Finding the Fourth Proportional to 9,012.55, 12,434.60 and 5,234.98

Step by Step Solution

1. Step 1: Write the proportion equation
   9,012.55 : 12,434.60 = 5,234.98 : x
2. Step 2: Convert to fraction form
   9,012.55/12,434.60 = 5,234.98/x
3. Step 3: Cross multiply
   9,012.55x = 12,434.60 × 5,234.98
4. Step 4: Simplify right side
   9,012.55x = 65,094,858.18
5. Step 5: Solve for x
   x = 65,094,858.18/9,012.55
6. Step 6: Final answer
   x = 7,222.69