Finding the Fourth Proportional to 28,182.06, 42,275.49 and 7,405.50

Step by Step Solution

1. Step 1: Write the proportion equation
   28,182.06 : 42,275.49 = 7,405.50 : x
2. Step 2: Convert to fraction form
   28,182.06/42,275.49 = 7,405.50/x
3. Step 3: Cross multiply
   28,182.06x = 42,275.49 × 7,405.50
4. Step 4: Simplify right side
   28,182.06x = 313,071,141.20
5. Step 5: Solve for x
   x = 313,071,141.20/28,182.06
6. Step 6: Final answer
   x = 11,108.88