Finding the Fourth Proportional to 9,860.15, 13,607.30 and 5,383.98

Step by Step Solution

1. Step 1: Write the proportion equation
   9,860.15 : 13,607.30 = 5,383.98 : x
2. Step 2: Convert to fraction form
   9,860.15/13,607.30 = 5,383.98/x
3. Step 3: Cross multiply
   9,860.15x = 13,607.30 × 5,383.98
4. Step 4: Simplify right side
   9,860.15x = 73,261,444.51
5. Step 5: Solve for x
   x = 73,261,444.51/9,860.15
6. Step 6: Final answer
   x = 7,430.05