Finding the Fourth Proportional to 9,860.42, 13,607.30 and 5,384.17

Step by Step Solution

1. Step 1: Write the proportion equation
   9,860.42 : 13,607.30 = 5,384.17 : x
2. Step 2: Convert to fraction form
   9,860.42/13,607.30 = 5,384.17/x
3. Step 3: Cross multiply
   9,860.42x = 13,607.30 × 5,384.17
4. Step 4: Simplify right side
   9,860.42x = 73,264,016.44
5. Step 5: Solve for x
   x = 73,264,016.44/9,860.42
6. Step 6: Final answer
   x = 7,430.11