Finding the Fourth Proportional to 9,402.32, 12,975.72 and 5,210.48

Step by Step Solution

1. Step 1: Write the proportion equation
   9,402.32 : 12,975.72 = 5,210.48 : x
2. Step 2: Convert to fraction form
   9,402.32/12,975.72 = 5,210.48/x
3. Step 3: Cross multiply
   9,402.32x = 12,975.72 × 5,210.48
4. Step 4: Simplify right side
   9,402.32x = 67,609,729.55
5. Step 5: Solve for x
   x = 67,609,729.55/9,402.32
6. Step 6: Final answer
   x = 7,190.75