Finding the Fourth Proportional to 9,398.83, 12,970.35 and 5,419.93

Step by Step Solution

1. Step 1: Write the proportion equation
   9,398.83 : 12,970.35 = 5,419.93 : x
2. Step 2: Convert to fraction form
   9,398.83/12,970.35 = 5,419.93/x
3. Step 3: Cross multiply
   9,398.83x = 12,970.35 × 5,419.93
4. Step 4: Simplify right side
   9,398.83x = 70,298,389.08
5. Step 5: Solve for x
   x = 70,298,389.08/9,398.83
6. Step 6: Final answer
   x = 7,479.48