Finding the Fourth Proportional to 13,005.60, 19,518.56 and 5,219.52

Step by Step Solution

1. Step 1: Write the proportion equation
   13,005.60 : 19,518.56 = 5,219.52 : x
2. Step 2: Convert to fraction form
   13,005.60/19,518.56 = 5,219.52/x
3. Step 3: Cross multiply
   13,005.60x = 19,518.56 × 5,219.52
4. Step 4: Simplify right side
   13,005.60x = 101,877,514.29
5. Step 5: Solve for x
   x = 101,877,514.29/13,005.60
6. Step 6: Final answer
   x = 7,833.36