Finding the Fourth Proportional to 12,210,821.31, 18,299,012.01 and 6,748,375.91

Step by Step Solution

1. Step 1: Write the proportion equation
   12,210,821.31 : 18,299,012.01 = 6,748,375.91 : x
2. Step 2: Convert to fraction form
   12,210,821.31/18,299,012.01 = 6,748,375.91/x
3. Step 3: Cross multiply
   12,210,821.31x = 18,299,012.01 × 6,748,375.91
4. Step 4: Simplify right side
   12,210,821.31x = 123,488,611,899,279.94
5. Step 5: Solve for x
   x = 123,488,611,899,279.94/12,210,821.31
6. Step 6: Final answer
   x = 10,113,047.17