Finding the Fourth Proportional to 28,619.46, 42,935.82 and 8,896.98

Step by Step Solution

1. Step 1: Write the proportion equation
   28,619.46 : 42,935.82 = 8,896.98 : x
2. Step 2: Convert to fraction form
   28,619.46/42,935.82 = 8,896.98/x
3. Step 3: Cross multiply
   28,619.46x = 42,935.82 × 8,896.98
4. Step 4: Simplify right side
   28,619.46x = 381,999,131.82
5. Step 5: Solve for x
   x = 381,999,131.82/28,619.46
6. Step 6: Final answer
   x = 13,347.53