Finding the Fourth Proportional to 9,860.86, 13,607.94 and 5,384.53

Step by Step Solution

1. Step 1: Write the proportion equation
   9,860.86 : 13,607.94 = 5,384.53 : x
2. Step 2: Convert to fraction form
   9,860.86/13,607.94 = 5,384.53/x
3. Step 3: Cross multiply
   9,860.86x = 13,607.94 × 5,384.53
4. Step 4: Simplify right side
   9,860.86x = 73,272,361.17
5. Step 5: Solve for x
   x = 73,272,361.17/9,860.86
6. Step 6: Final answer
   x = 7,430.63