Finding the Fourth Proportional to 52,989.59, 79,485.20 and 13,545.83

Step by Step Solution

1. Step 1: Write the proportion equation
   52,989.59 : 79,485.20 = 13,545.83 : x
2. Step 2: Convert to fraction form
   52,989.59/79,485.20 = 13,545.83/x
3. Step 3: Cross multiply
   52,989.59x = 79,485.20 × 13,545.83
4. Step 4: Simplify right side
   52,989.59x = 1,076,693,006.72
5. Step 5: Solve for x
   x = 1,076,693,006.72/52,989.59
6. Step 6: Final answer
   x = 20,318.95