Finding the Fourth Proportional to 21,731,818.10, 29,983,368.90 and 13,026,814.52

Step by Step Solution

1. Step 1: Write the proportion equation
   21,731,818.10 : 29,983,368.90 = 13,026,814.52 : x
2. Step 2: Convert to fraction form
   21,731,818.10/29,983,368.90 = 13,026,814.52/x
3. Step 3: Cross multiply
   21,731,818.10x = 29,983,368.90 × 13,026,814.52
4. Step 4: Simplify right side
   21,731,818.10x = 390,587,785,345,036.38
5. Step 5: Solve for x
   x = 390,587,785,345,036.38/21,731,818.10
6. Step 6: Final answer
   x = 17,973,083.69