Finding the Fourth Proportional to 28,059.90, 42,098.94 and 18,737.82

Step by Step Solution

1. Step 1: Write the proportion equation
   28,059.90 : 42,098.94 = 18,737.82 : x
2. Step 2: Convert to fraction form
   28,059.90/42,098.94 = 18,737.82/x
3. Step 3: Cross multiply
   28,059.90x = 42,098.94 × 18,737.82
4. Step 4: Simplify right side
   28,059.90x = 788,842,359.91
5. Step 5: Solve for x
   x = 788,842,359.91/28,059.90
6. Step 6: Final answer
   x = 28,112.80