Finding the Fourth Proportional to 28,061.80, 42,063.10 and 9,336.84

Step by Step Solution

1. Step 1: Write the proportion equation
   28,061.80 : 42,063.10 = 9,336.84 : x
2. Step 2: Convert to fraction form
   28,061.80/42,063.10 = 9,336.84/x
3. Step 3: Cross multiply
   28,061.80x = 42,063.10 × 9,336.84
4. Step 4: Simplify right side
   28,061.80x = 392,736,434.60
5. Step 5: Solve for x
   x = 392,736,434.60/28,061.80
6. Step 6: Final answer
   x = 13,995.41