Finding the Fourth Proportional to 31,437.02, 47,122.59 and 12,730.34

Step by Step Solution

1. Step 1: Write the proportion equation
   31,437.02 : 47,122.59 = 12,730.34 : x
2. Step 2: Convert to fraction form
   31,437.02/47,122.59 = 12,730.34/x
3. Step 3: Cross multiply
   31,437.02x = 47,122.59 × 12,730.34
4. Step 4: Simplify right side
   31,437.02x = 599,886,592.38
5. Step 5: Solve for x
   x = 599,886,592.38/31,437.02
6. Step 6: Final answer
   x = 19,082.17