Finding the Fourth Proportional to 13,154.82, 19,732.50 and 4,389.81

Step by Step Solution

1. Step 1: Write the proportion equation
   13,154.82 : 19,732.50 = 4,389.81 : x
2. Step 2: Convert to fraction form
   13,154.82/19,732.50 = 4,389.81/x
3. Step 3: Cross multiply
   13,154.82x = 19,732.50 × 4,389.81
4. Step 4: Simplify right side
   13,154.82x = 86,621,925.83
5. Step 5: Solve for x
   x = 86,621,925.83/13,154.82
6. Step 6: Final answer
   x = 6,584.81