Finding the Fourth Proportional to 9,420.12, 13,002.96 and 5,442.84

Step by Step Solution

1. Step 1: Write the proportion equation
   9,420.12 : 13,002.96 = 5,442.84 : x
2. Step 2: Convert to fraction form
   9,420.12/13,002.96 = 5,442.84/x
3. Step 3: Cross multiply
   9,420.12x = 13,002.96 × 5,442.84
4. Step 4: Simplify right side
   9,420.12x = 70,773,030.81
5. Step 5: Solve for x
   x = 70,773,030.81/9,420.12
6. Step 6: Final answer
   x = 7,512.96