Finding the Fourth Proportional to 9,934.65, 13,709.79 and 5,458.50

Step by Step Solution

1. Step 1: Write the proportion equation
   9,934.65 : 13,709.79 = 5,458.50 : x
2. Step 2: Convert to fraction form
   9,934.65/13,709.79 = 5,458.50/x
3. Step 3: Cross multiply
   9,934.65x = 13,709.79 × 5,458.50
4. Step 4: Simplify right side
   9,934.65x = 74,834,888.72
5. Step 5: Solve for x
   x = 74,834,888.72/9,934.65
6. Step 6: Final answer
   x = 7,532.72