Finding the Fourth Proportional to 13,484.61, 18,608.79 and 7,516.50

Step by Step Solution

1. Step 1: Write the proportion equation
   13,484.61 : 18,608.79 = 7,516.50 : x
2. Step 2: Convert to fraction form
   13,484.61/18,608.79 = 7,516.50/x
3. Step 3: Cross multiply
   13,484.61x = 18,608.79 × 7,516.50
4. Step 4: Simplify right side
   13,484.61x = 139,872,970.04
5. Step 5: Solve for x
   x = 139,872,970.04/13,484.61
6. Step 6: Final answer
   x = 10,372.79