Finding the Fourth Proportional to 13,483.89, 18,607.25 and 7,818.87

Step by Step Solution

1. Step 1: Write the proportion equation
   13,483.89 : 18,607.25 = 7,818.87 : x
2. Step 2: Convert to fraction form
   13,483.89/18,607.25 = 7,818.87/x
3. Step 3: Cross multiply
   13,483.89x = 18,607.25 × 7,818.87
4. Step 4: Simplify right side
   13,483.89x = 145,487,668.81
5. Step 5: Solve for x
   x = 145,487,668.81/13,483.89
6. Step 6: Final answer
   x = 10,789.74