Finding the Fourth Proportional to 9,974.31, 13,762.33 and 5,780.13

Step by Step Solution

1. Step 1: Write the proportion equation
   9,974.31 : 13,762.33 = 5,780.13 : x
2. Step 2: Convert to fraction form
   9,974.31/13,762.33 = 5,780.13/x
3. Step 3: Cross multiply
   9,974.31x = 13,762.33 × 5,780.13
4. Step 4: Simplify right side
   9,974.31x = 79,548,056.50
5. Step 5: Solve for x
   x = 79,548,056.50/9,974.31
6. Step 6: Final answer
   x = 7,975.29