Finding the Fourth Proportional to 7,140.84, 9,848.82 and 5,458.02

Step by Step Solution

1. Step 1: Write the proportion equation
   7,140.84 : 9,848.82 = 5,458.02 : x
2. Step 2: Convert to fraction form
   7,140.84/9,848.82 = 5,458.02/x
3. Step 3: Cross multiply
   7,140.84x = 9,848.82 × 5,458.02
4. Step 4: Simplify right side
   7,140.84x = 53,755,056.54
5. Step 5: Solve for x
   x = 53,755,056.54/7,140.84
6. Step 6: Final answer
   x = 7,527.83