Finding the Fourth Proportional to 13,158.72, 18,156.11 and 7,852.50

Step by Step Solution

1. Step 1: Write the proportion equation
   13,158.72 : 18,156.11 = 7,852.50 : x
2. Step 2: Convert to fraction form
   13,158.72/18,156.11 = 7,852.50/x
3. Step 3: Cross multiply
   13,158.72x = 18,156.11 × 7,852.50
4. Step 4: Simplify right side
   13,158.72x = 142,570,814.51
5. Step 5: Solve for x
   x = 142,570,814.51/13,158.72
6. Step 6: Final answer
   x = 10,834.70