Finding the Fourth Proportional to 21,168,111.70, 31,710,177.15 and 11,569,417.30

Step by Step Solution

1. Step 1: Write the proportion equation
   21,168,111.70 : 31,710,177.15 = 11,569,417.30 : x
2. Step 2: Convert to fraction form
   21,168,111.70/31,710,177.15 = 11,569,417.30/x
3. Step 3: Cross multiply
   21,168,111.70x = 31,710,177.15 × 11,569,417.30
4. Step 4: Simplify right side
   21,168,111.70x = 366,868,272,105,274.69
5. Step 5: Solve for x
   x = 366,868,272,105,274.69/21,168,111.70
6. Step 6: Final answer
   x = 17,331,176.12