Finding the Fourth Proportional to 9,911.94, 14,870.64 and 8,058.45

Step by Step Solution

1. Step 1: Write the proportion equation
   9,911.94 : 14,870.64 = 8,058.45 : x
2. Step 2: Convert to fraction form
   9,911.94/14,870.64 = 8,058.45/x
3. Step 3: Cross multiply
   9,911.94x = 14,870.64 × 8,058.45
4. Step 4: Simplify right side
   9,911.94x = 119,834,308.91
5. Step 5: Solve for x
   x = 119,834,308.91/9,911.94
6. Step 6: Final answer
   x = 12,089.89