Finding the Fourth Proportional to 9,442.23, 13,030.61 and 5,409.78

Step by Step Solution

1. Step 1: Write the proportion equation
   9,442.23 : 13,030.61 = 5,409.78 : x
2. Step 2: Convert to fraction form
   9,442.23/13,030.61 = 5,409.78/x
3. Step 3: Cross multiply
   9,442.23x = 13,030.61 × 5,409.78
4. Step 4: Simplify right side
   9,442.23x = 70,492,746.89
5. Step 5: Solve for x
   x = 70,492,746.89/9,442.23
6. Step 6: Final answer
   x = 7,465.69