Finding the Fourth Proportional to 9,670.24, 13,345.86 and 5,478.76

Step by Step Solution

1. Step 1: Write the proportion equation
   9,670.24 : 13,345.86 = 5,478.76 : x
2. Step 2: Convert to fraction form
   9,670.24/13,345.86 = 5,478.76/x
3. Step 3: Cross multiply
   9,670.24x = 13,345.86 × 5,478.76
4. Step 4: Simplify right side
   9,670.24x = 73,118,763.93
5. Step 5: Solve for x
   x = 73,118,763.93/9,670.24
6. Step 6: Final answer
   x = 7,561.22