Finding the Fourth Proportional to 9,200.98, 12,700.14 and 5,423.88

Step by Step Solution

1. Step 1: Write the proportion equation
   9,200.98 : 12,700.14 = 5,423.88 : x
2. Step 2: Convert to fraction form
   9,200.98/12,700.14 = 5,423.88/x
3. Step 3: Cross multiply
   9,200.98x = 12,700.14 × 5,423.88
4. Step 4: Simplify right side
   9,200.98x = 68,884,035.34
5. Step 5: Solve for x
   x = 68,884,035.34/9,200.98
6. Step 6: Final answer
   x = 7,486.60