Finding the Fourth Proportional to 9,402.74, 12,976.69 and 5,212.02

Step by Step Solution

1. Step 1: Write the proportion equation
   9,402.74 : 12,976.69 = 5,212.02 : x
2. Step 2: Convert to fraction form
   9,402.74/12,976.69 = 5,212.02/x
3. Step 3: Cross multiply
   9,402.74x = 12,976.69 × 5,212.02
4. Step 4: Simplify right side
   9,402.74x = 67,634,767.81
5. Step 5: Solve for x
   x = 67,634,767.81/9,402.74
6. Step 6: Final answer
   x = 7,193.09