Finding the Fourth Proportional to 13,607.06, 18,777.83 and 7,557.35

Step by Step Solution

1. Step 1: Write the proportion equation
   13,607.06 : 18,777.83 = 7,557.35 : x
2. Step 2: Convert to fraction form
   13,607.06/18,777.83 = 7,557.35/x
3. Step 3: Cross multiply
   13,607.06x = 18,777.83 × 7,557.35
4. Step 4: Simplify right side
   13,607.06x = 141,910,501.87
5. Step 5: Solve for x
   x = 141,910,501.87/13,607.06
6. Step 6: Final answer
   x = 10,429.19