Finding the Fourth Proportional to 12,598.39, 18,900.83 and 4,807.81

Step by Step Solution

1. Step 1: Write the proportion equation
   12,598.39 : 18,900.83 = 4,807.81 : x
2. Step 2: Convert to fraction form
   12,598.39/18,900.83 = 4,807.81/x
3. Step 3: Cross multiply
   12,598.39x = 18,900.83 × 4,807.81
4. Step 4: Simplify right side
   12,598.39x = 90,871,599.48
5. Step 5: Solve for x
   x = 90,871,599.48/12,598.39
6. Step 6: Final answer
   x = 7,212.95