Finding the Fourth Proportional to 12,071.34, 16,686.34 and 10,070.24

Step by Step Solution

1. Step 1: Write the proportion equation
   12,071.34 : 16,686.34 = 10,070.24 : x
2. Step 2: Convert to fraction form
   12,071.34/16,686.34 = 10,070.24/x
3. Step 3: Cross multiply
   12,071.34x = 16,686.34 × 10,070.24
4. Step 4: Simplify right side
   12,071.34x = 168,035,448.52
5. Step 5: Solve for x
   x = 168,035,448.52/12,071.34
6. Step 6: Final answer
   x = 13,920.20