Finding the Fourth Proportional to 13,897.17, 19,178.78 and 7,930.00

Step by Step Solution

1. Step 1: Write the proportion equation
   13,897.17 : 19,178.78 = 7,930.00 : x
2. Step 2: Convert to fraction form
   13,897.17/19,178.78 = 7,930.00/x
3. Step 3: Cross multiply
   13,897.17x = 19,178.78 × 7,930.00
4. Step 4: Simplify right side
   13,897.17x = 152,087,709.72
5. Step 5: Solve for x
   x = 152,087,709.72/13,897.17
6. Step 6: Final answer
   x = 10,943.79