Finding the Fourth Proportional to 13,655.52, 18,846.41 and 7,688.35

Step by Step Solution

1. Step 1: Write the proportion equation
   13,655.52 : 18,846.41 = 7,688.35 : x
2. Step 2: Convert to fraction form
   13,655.52/18,846.41 = 7,688.35/x
3. Step 3: Cross multiply
   13,655.52x = 18,846.41 × 7,688.35
4. Step 4: Simplify right side
   13,655.52x = 144,897,796.32
5. Step 5: Solve for x
   x = 144,897,796.32/13,655.52
6. Step 6: Final answer
   x = 10,610.93