Finding the Fourth Proportional to 13,607.16, 18,772.52 and 7,860.83

Step by Step Solution

1. Step 1: Write the proportion equation
   13,607.16 : 18,772.52 = 7,860.83 : x
2. Step 2: Convert to fraction form
   13,607.16/18,772.52 = 7,860.83/x
3. Step 3: Cross multiply
   13,607.16x = 18,772.52 × 7,860.83
4. Step 4: Simplify right side
   13,607.16x = 147,567,455.22
5. Step 5: Solve for x
   x = 147,567,455.22/13,607.16
6. Step 6: Final answer
   x = 10,844.84