Finding the Fourth Proportional to 10,191.84, 15,289.82 and 3,618.54

Step by Step Solution

1. Step 1: Write the proportion equation
   10,191.84 : 15,289.82 = 3,618.54 : x
2. Step 2: Convert to fraction form
   10,191.84/15,289.82 = 3,618.54/x
3. Step 3: Cross multiply
   10,191.84x = 15,289.82 × 3,618.54
4. Step 4: Simplify right side
   10,191.84x = 55,326,820.74
5. Step 5: Solve for x
   x = 55,326,820.74/10,191.84
6. Step 6: Final answer
   x = 5,428.54