Finding the Fourth Proportional to 12,892.30, 18,088.10 and 12,892.30

Step by Step Solution

1. Step 1: Write the proportion equation
   12,892.30 : 18,088.10 = 12,892.30 : x
2. Step 2: Convert to fraction form
   12,892.30/18,088.10 = 12,892.30/x
3. Step 3: Cross multiply
   12,892.30x = 18,088.10 × 12,892.30
4. Step 4: Simplify right side
   12,892.30x = 233,197,211.63
5. Step 5: Solve for x
   x = 233,197,211.63/12,892.30
6. Step 6: Final answer
   x = 18,088.10