Finding the Fourth Proportional to 35,958.61, 53,932.71 and 10,991.96

Step by Step Solution

1. Step 1: Write the proportion equation
   35,958.61 : 53,932.71 = 10,991.96 : x
2. Step 2: Convert to fraction form
   35,958.61/53,932.71 = 10,991.96/x
3. Step 3: Cross multiply
   35,958.61x = 53,932.71 × 10,991.96
4. Step 4: Simplify right side
   35,958.61x = 592,826,164.82
5. Step 5: Solve for x
   x = 592,826,164.82/35,958.61
6. Step 6: Final answer
   x = 16,486.35