Finding the Fourth Proportional to 9,457.39, 13,047.40 and 5,680.76

Step by Step Solution

1. Step 1: Write the proportion equation
   9,457.39 : 13,047.40 = 5,680.76 : x
2. Step 2: Convert to fraction form
   9,457.39/13,047.40 = 5,680.76/x
3. Step 3: Cross multiply
   9,457.39x = 13,047.40 × 5,680.76
4. Step 4: Simplify right side
   9,457.39x = 74,119,148.02
5. Step 5: Solve for x
   x = 74,119,148.02/9,457.39
6. Step 6: Final answer
   x = 7,837.17