Finding the Fourth Proportional to 9,338.34, 12,888.80 and 5,362.18

Step by Step Solution

1. Step 1: Write the proportion equation
   9,338.34 : 12,888.80 = 5,362.18 : x
2. Step 2: Convert to fraction form
   9,338.34/12,888.80 = 5,362.18/x
3. Step 3: Cross multiply
   9,338.34x = 12,888.80 × 5,362.18
4. Step 4: Simplify right side
   9,338.34x = 69,112,065.58
5. Step 5: Solve for x
   x = 69,112,065.58/9,338.34
6. Step 6: Final answer
   x = 7,400.89