Finding the Fourth Proportional to 35,580.10, 53,379.39 and 10,620.15

Step by Step Solution

1. Step 1: Write the proportion equation
   35,580.10 : 53,379.39 = 10,620.15 : x
2. Step 2: Convert to fraction form
   35,580.10/53,379.39 = 10,620.15/x
3. Step 3: Cross multiply
   35,580.10x = 53,379.39 × 10,620.15
4. Step 4: Simplify right side
   35,580.10x = 566,897,178.62
5. Step 5: Solve for x
   x = 566,897,178.62/35,580.10
6. Step 6: Final answer
   x = 15,932.99