Finding the Fourth Proportional to 35,776.94, 53,663.69 and 13,588.59

Step by Step Solution

1. Step 1: Write the proportion equation
   35,776.94 : 53,663.69 = 13,588.59 : x
2. Step 2: Convert to fraction form
   35,776.94/53,663.69 = 13,588.59/x
3. Step 3: Cross multiply
   35,776.94x = 53,663.69 × 13,588.59
4. Step 4: Simplify right side
   35,776.94x = 729,213,625.50
5. Step 5: Solve for x
   x = 729,213,625.50/35,776.94
6. Step 6: Final answer
   x = 20,382.22