Finding the Fourth Proportional to 9,819.60, 13,547.60 and 5,570.08

Step by Step Solution

1. Step 1: Write the proportion equation
   9,819.60 : 13,547.60 = 5,570.08 : x
2. Step 2: Convert to fraction form
   9,819.60/13,547.60 = 5,570.08/x
3. Step 3: Cross multiply
   9,819.60x = 13,547.60 × 5,570.08
4. Step 4: Simplify right side
   9,819.60x = 75,461,215.81
5. Step 5: Solve for x
   x = 75,461,215.81/9,819.60
6. Step 6: Final answer
   x = 7,684.75