Finding the Fourth Proportional to 9,555.35, 14,332.50 and 2,980.78

Step by Step Solution

1. Step 1: Write the proportion equation
   9,555.35 : 14,332.50 = 2,980.78 : x
2. Step 2: Convert to fraction form
   9,555.35/14,332.50 = 2,980.78/x
3. Step 3: Cross multiply
   9,555.35x = 14,332.50 × 2,980.78
4. Step 4: Simplify right side
   9,555.35x = 42,721,957.69
5. Step 5: Solve for x
   x = 42,721,957.69/9,555.35
6. Step 6: Final answer
   x = 4,471.00