Finding the Fourth Proportional to 8,889.71, 12,258.61 and 7,634.93

Step by Step Solution

1. Step 1: Write the proportion equation
   8,889.71 : 12,258.61 = 7,634.93 : x
2. Step 2: Convert to fraction form
   8,889.71/12,258.61 = 7,634.93/x
3. Step 3: Cross multiply
   8,889.71x = 12,258.61 × 7,634.93
4. Step 4: Simplify right side
   8,889.71x = 93,593,548.87
5. Step 5: Solve for x
   x = 93,593,548.87/8,889.71
6. Step 6: Final answer
   x = 10,528.31