Finding the Fourth Proportional to 9,670.88, 13,345.81 and 5,479.13

Step by Step Solution

1. Step 1: Write the proportion equation
   9,670.88 : 13,345.81 = 5,479.13 : x
2. Step 2: Convert to fraction form
   9,670.88/13,345.81 = 5,479.13/x
3. Step 3: Cross multiply
   9,670.88x = 13,345.81 × 5,479.13
4. Step 4: Simplify right side
   9,670.88x = 73,123,347.52
5. Step 5: Solve for x
   x = 73,123,347.52/9,670.88
6. Step 6: Final answer
   x = 7,561.19