Finding the Fourth Proportional to 9,887.76, 14,819.31 and 7,072.38

Step by Step Solution

1. Step 1: Write the proportion equation
   9,887.76 : 14,819.31 = 7,072.38 : x
2. Step 2: Convert to fraction form
   9,887.76/14,819.31 = 7,072.38/x
3. Step 3: Cross multiply
   9,887.76x = 14,819.31 × 7,072.38
4. Step 4: Simplify right side
   9,887.76x = 104,807,791.66
5. Step 5: Solve for x
   x = 104,807,791.66/9,887.76
6. Step 6: Final answer
   x = 10,599.75