Finding the Fourth Proportional to 9,030.79, 13,542.69 and 3,106.55

Step by Step Solution

1. Step 1: Write the proportion equation
   9,030.79 : 13,542.69 = 3,106.55 : x
2. Step 2: Convert to fraction form
   9,030.79/13,542.69 = 3,106.55/x
3. Step 3: Cross multiply
   9,030.79x = 13,542.69 × 3,106.55
4. Step 4: Simplify right side
   9,030.79x = 42,071,043.62
5. Step 5: Solve for x
   x = 42,071,043.62/9,030.79
6. Step 6: Final answer
   x = 4,658.62