Finding the Fourth Proportional to 9,914.53, 14,842.57 and 8,684.34

Step by Step Solution

1. Step 1: Write the proportion equation
   9,914.53 : 14,842.57 = 8,684.34 : x
2. Step 2: Convert to fraction form
   9,914.53/14,842.57 = 8,684.34/x
3. Step 3: Cross multiply
   9,914.53x = 14,842.57 × 8,684.34
4. Step 4: Simplify right side
   9,914.53x = 128,897,876.39
5. Step 5: Solve for x
   x = 128,897,876.39/9,914.53
6. Step 6: Final answer
   x = 13,000.91