Finding the Fourth Proportional to 43,385.82, 65,077.51 and 13,805.43

Step by Step Solution

1. Step 1: Write the proportion equation
   43,385.82 : 65,077.51 = 13,805.43 : x
2. Step 2: Convert to fraction form
   43,385.82/65,077.51 = 13,805.43/x
3. Step 3: Cross multiply
   43,385.82x = 65,077.51 × 13,805.43
4. Step 4: Simplify right side
   43,385.82x = 898,423,008.88
5. Step 5: Solve for x
   x = 898,423,008.88/43,385.82
6. Step 6: Final answer
   x = 20,707.76