Finding the Fourth Proportional to 19,395.63, 29,061.86 and 13,558.77

Step by Step Solution

1. Step 1: Write the proportion equation
   19,395.63 : 29,061.86 = 13,558.77 : x
2. Step 2: Convert to fraction form
   19,395.63/29,061.86 = 13,558.77/x
3. Step 3: Cross multiply
   19,395.63x = 29,061.86 × 13,558.77
4. Step 4: Simplify right side
   19,395.63x = 394,043,007.72
5. Step 5: Solve for x
   x = 394,043,007.72/19,395.63
6. Step 6: Final answer
   x = 20,316.07