Finding the Fourth Proportional to 13,802.56, 19,047.62 and 7,515

Step by Step Solution

1. Step 1: Write the proportion equation
   13,802.56 : 19,047.62 = 7,515 : x
2. Step 2: Convert to fraction form
   13,802.56/19,047.62 = 7,515/x
3. Step 3: Cross multiply
   13,802.56x = 19,047.62 × 7,515
4. Step 4: Simplify right side
   13,802.56x = 143,142,864.30
5. Step 5: Solve for x
   x = 143,142,864.30/13,802.56
6. Step 6: Final answer
   x = 10,370.75