Finding the Fourth Proportional to 31,088.34, 42,916.23 and 18,337.19

Step by Step Solution

1. Step 1: Write the proportion equation
   31,088.34 : 42,916.23 = 18,337.19 : x
2. Step 2: Convert to fraction form
   31,088.34/42,916.23 = 18,337.19/x
3. Step 3: Cross multiply
   31,088.34x = 42,916.23 × 18,337.19
4. Step 4: Simplify right side
   31,088.34x = 786,962,849.01
5. Step 5: Solve for x
   x = 786,962,849.01/31,088.34
6. Step 6: Final answer
   x = 25,313.76